摘要：【中文】一种气保护矿物粉型314耐热不锈钢药芯焊丝，属于材料加工工程领域，主要用于314耐热不锈钢的焊接。采用常用314不锈钢带作为包覆层，粉芯中各合金成分的质量百分比为：金红石：18％－24％；大理石：3％－5％；长石：3％－5％；萤石4％－6％；石英4％－6％；氧化铋0％－0.3％；氧化铝3％－5％；镁砂2％－3％。金属铬粉20％－25％，金属镍18％－25％，电解金属锰3％－5％，45号硅铁2％－5％，混合稀土3％－5％，钼铁0％－10％,余量为还原铁粉(可以为0或用于补足100％)。混药芯焊丝的填充率为24－28％。焊接接头具有优良的抗裂性、优良的力学性能。 【EN】A gas shielded mineral powder type 314 heat-resistant stainless steel flux-cored wire belongs to the field of material processing engineering and is mainly used for welding 314 heat-resistant stainless steel. A common 314 stainless steel band is adopted as a coating layer, and the powder core comprises the following alloy components in percentage by mass: rutile: 18% -24%; and (3) marble: 3% -5%; feldspar: 3% -5%; 4 to 6 percent of fluorite; 4% -6% of quartz; 0% -0.3% of bismuth oxide; 3% -5% of alumina; 2 to 3 percent of magnesia. 20-25% of metal chromium powder, 18-25% of metal nickel, 3-5% of electrolytic manganese metal, 2-5% of No. 45 ferrosilicon, 3-5% of mixed rare earth, 0-10% of ferromolybdenum and the balance of reduced iron powder (which can be 0 or can be used for complementing 100%). The filling rate of the mixed flux-cored wire is 24-28%. The welding joint has excellent crack resistance and excellent mechanical property.

摘要：【中文】一种高韧性17‑4PH沉淀硬化不锈钢金属芯焊丝，属于材料加工工程领域，主要用于17‑4PH沉淀硬化不锈钢的焊接和堆焊。采用430不锈钢带作为包覆层，粉芯中合合金成分的质量百分比为：金属铬粉的质量百分含量为17－25％，金属镍粉的质量百分含量为13－18％，电解金属锰的质量百分含量为1－3％，钼铁(Mo％＝60％)的质量百分比为0－5％，铌铁(Nb％＝60％)的质量百分比为0.5－2％，纯铜粉的质量百分比为11－15％，45％硅铁的质量百分比为0－2％。碳酸钠的质量百分比为2－4％，钛酸钾的质量百分比为2－4％。余量为还原铁粉。药芯焊丝的填充率为28－35％。焊接接头具有优良的韧性和力学性能。 【EN】A high-toughness 17-4PH precipitation hardening stainless steel metal-cored welding wire belongs to the field of material processing engineering and is mainly used for welding and surfacing of 17-4PH precipitation hardening stainless steel. A430 stainless steel band is adopted as a coating layer, and the mass percentage of the alloy components in the powder core is as follows: the weight percentage of the metal chromium powder is 17-25%, the weight percentage of the metal nickel powder is 13-18%, the weight percentage of the electrolytic manganese metal is 1-3%, the weight percentage of the ferromolybdenum (Mo% ═ 60%) is 0-5%, the weight percentage of the ferroniobium (Nb% ═ 60%) is 0.5-2%, the weight percentage of the pure copper powder is 11-15%, and the weight percentage of the 45% ferrosilicon is 0-2%. The mass percent of the sodium carbonate is 2-4%, and the mass percent of the potassium titanate is 2-4%. The balance of reduced iron powder. The filling rate of the flux-cored wire is 28-35%. The welding joint has excellent toughness and mechanical property.

摘要：本发明公开了一种纳米孔基因测序电路及其控制方法和测序装置，该电路包括测序模块和开关模块，测序模块用于在测序阶段根据自身内部开关节点的动作状态向纳米孔膜的两端施加不同的电压；开关模块与测序模块连接，开关模块用于在测序模块上电或下电时，控制测序模块根据开关模块接入的固定电压，向纳米孔膜两端施加相同的电压。本方案能够避免纳米孔膜因两端具有较大压差而出现破膜的风险。

摘要：【中文】本发明提供了一种3D打印砂型的模具的制造方法，该方法包括以下步骤：对模具进行三维设计，采用砂型3D打印机制备模具；采用增强液浸润打印后的砂型模具；对模具进行数控切削加工，得到合格模具。本发明提出的一种3D打印砂型模具制造方法，其结构适应性强，重量轻，省去了传统金属的模具的铸造与加工环节，实现了砂型铸造用模具的快速、低成本制造，可用于小到中等批量的铸件生产。 【EN】The invention provides a manufacturing method of a mold for 3D printing sand mold, which comprises the following steps: performing three-dimensional design on a mold, and preparing the mold by adopting a sand mold 3D printer; infiltrating the printed sand mold with the enhancing liquid; and carrying out numerical control cutting processing on the die to obtain the qualified die. The manufacturing method of the 3D printing sand mold provided by the invention has the advantages that the structural adaptability is strong, the weight is light, the casting and processing links of the traditional metal mold are omitted, the rapid and low-cost manufacturing of the mold for sand casting is realized, and the method can be used for small-to-medium-batch casting production.

摘要：【中文】本发明公开一种基于三维激光扫描技术对长距离盾构隧道进行数据采集及断面椭圆拟合的方法，该方法能快速采集隧道点云数据并对隧道断面点云拟合，以便检测隧道变形情况。所述方法包括：S1、根据隧道的长度、内径尺寸、曲率半径等，选择合适的扫描方式、测站间距和扫描分辨率，在两个测站之间布设球型标靶，在隧道轴向左右两侧衬砌管片上交替布设平面十字标靶纸，并采用全站仪+小棱镜的方法测量平面十字标靶纸的坐标；S2、预处理采集得到的点云数据并截取隧道断面，数据预处理过程包括点云拼接，点云去噪及点云简化过程；S3、结合随机原理与最小平方中值法拟合提取的隧道断面，并采用莱特准则确定阈值进行优化。本发明的优点是，隧道点云数据采集速度快，椭圆拟合结果精度较高。 【EN】The invention discloses a method for carrying out data acquisition and section ellipse fitting on a long-distance shield tunnel based on a three-dimensional laser scanning technology. The method comprises the following steps: s1, selecting a proper scanning mode, a proper station spacing and a proper scanning resolution according to the length, the inner diameter size, the curvature radius and the like of the tunnel, laying a spherical target between two stations, alternately laying planar cross-shaped target paper on lining segments on the left side and the right side of the tunnel in the axial direction, and measuring the coordinates of the planar cross-shaped target paper by adopting a total station and small prism method; s2, preprocessing the acquired point cloud data and intercepting a tunnel section, wherein the data preprocessing process comprises point cloud splicing, point cloud denoising and point cloud simplification; and S3, fitting the extracted tunnel section by combining a random principle and a least square median method, and determining a threshold value by adopting a Latt criterion for optimization. The method has the advantages of high tunnel point cloud data acquisition speed and high ellipse fitting result precision.

摘要：【中文】本发明属于冷冻消融技术领域，公开了一种冷冻消融针及其消融系统，所述冷冻消融针及其消融系统包括：功率检测模块、温度检测模块、中央控制模块、麻醉模块、刺入模块、液氮输送模块、加热模块、消融模块、消融规划模块、显示模块。本发明通过温度检测模块使光声成像的有效温度监控区域与成像区域一致，因此可实现大范围无创温度监测；测温准确度高的特点，能够满足临床需求；同时，通过消融规划模块将有利于实现对病灶区域的精准控制，并确保消融术的有效性。 【EN】The invention belongs to the technical field of cryoablation, and discloses a cryoablation needle and an ablation system thereof, wherein the cryoablation needle and the ablation system thereof comprise: the device comprises a power detection module, a temperature detection module, a central control module, an anesthesia module, a puncture module, a liquid nitrogen delivery module, a heating module, an ablation planning module and a display module. The temperature detection module is used for enabling the effective temperature monitoring area of the photoacoustic imaging to be consistent with the imaging area, so that large-range noninvasive temperature monitoring can be realized; the temperature measurement accuracy is high, and the clinical requirements can be met; meanwhile, the ablation planning module is beneficial to realizing accurate control on the focus area and ensuring the effectiveness of the ablation.

摘要：【中文】本发明属于医疗器械技术领域，公开了一种射频消融针状电极及其制备方法，所述射频消融针状电极制备方法具体包括：对射频消融电极针包裹在Inconel 625合金内，在260‑300摄氏度下使Inconel 625合金定型在电极上形成绝缘层；将Inconel 625合金形成的绝缘层剥离；清洗并利用金相砂纸对射频消融电极针进行打磨，在引发剂过硫酸铵的存在下于室温超声搅拌反应4小时，然后浸入0.1‑2mol/L的盐酸溶液中1‑48小时；浸泡结束后，取出电极针进行固化得到射频消融针状电极。利用本发明提供的制备方法制备的电极针综合性能高，不会对周围组织产生任何的影响，同时消融范围大。 【EN】The invention belongs to the technical field of medical instruments, and discloses a radio frequency ablation needle electrode and a preparation method thereof, wherein the preparation method of the radio frequency ablation needle electrode specifically comprises the following steps: wrapping the radio frequency ablation electrode needle in the Inconel625 alloy, and shaping the Inconel625 alloy on the electrode at 260-300 ℃ to form an insulating layer; stripping an insulating layer formed by the Inconel625 alloy; cleaning and polishing the radio frequency ablation electrode needle by using metallographic abrasive paper, carrying out ultrasonic stirring reaction for 4 hours at room temperature in the presence of initiator ammonium persulfate, and then soaking in 0.1-2mol/L hydrochloric acid solution for 1-48 hours; and after soaking, taking out the electrode needle and curing to obtain the radiofrequency ablation needle electrode. The electrode needle prepared by the preparation method provided by the invention has high comprehensive performance, cannot generate any influence on surrounding tissues, and has a large ablation range.

摘要：【中文】本发明公开了一种清洗装置，包括：支架；刷头，设置在支架上；喷射装置，设置在支架上，并位于刷头的一侧；控制装置，设置在支架上，用于控制喷射装置对待清洁部喷射清洁剂；应用本发明的清洗装置，能够在高效、低成本提升清洁效果的同时减少清洁液的使用。 【EN】The invention discloses a cleaning device, comprising: a support; the brush head is arranged on the bracket; the spraying device is arranged on the bracket and is positioned at one side of the brush head; the control device is arranged on the bracket and used for controlling the spraying device to spray the cleaning agent to the part to be cleaned; by applying the cleaning device disclosed by the invention, the use of cleaning liquid can be reduced while the cleaning effect is improved with high efficiency and low cost.

摘要：【中文】本发明属于检测技术领域，公开了一种含纳米磁粉的泡腾片，包括以下组分：纳米磁粉、分散剂、消泡剂、成型剂、碱性碳酸盐和成膜剂；所述纳米磁粉为纳米Fe₂O₃。该泡腾片中纳米磁粉同时与聚氧乙烯聚氧丙烯嵌段共聚物、三乙醇胺或苯甲酸钠同时使用，使得泡腾片与水混合制得水磁悬液，能保持水磁悬液中纳米磁粉分散均匀、稳定，也有助于提高检测的灵敏度。该泡腾片所用的纳米磁粉为纳米γ‑Fe₂O₃，纳米γ‑Fe₂O₃为红色，制得的泡腾片用于检测工件损伤时，无需辅助喷涂反差增色剂，使用方便，且降低检测成本，能检测的裂缝可达到宽0.1μm，长0.5μm，检测灵敏度高。本发明所述泡腾片能制备成固定规格质量的片剂，使用和运输方便。 【EN】The invention belongs to the technical field of detection, and discloses an effervescent tablet containing nano magnetic powder, which comprises the following components: nano magnetic powder, a dispersing agent, a defoaming agent, a forming agent, alkaline carbonate and a film-forming agent; the nanometer magnetic powder is nanometer Fe₂O₃. The nanometer magnetic powder in the effervescent tablet is simultaneously used with the polyoxyethylene polyoxypropylene block copolymer, the triethanolamine or the sodium benzoate, so that the effervescent tablet is mixed with water to prepare the water magnetic suspension, the nanometer magnetic powder in the water magnetic suspension can be uniformly and stably dispersed, and the detection sensitivity can be improved. The nanometer magnetic powder used by the effervescent tablet is nanometer gamma-Fe₂O₃Nano gamma-Fe₂O₃The prepared effervescent tablet is red, when the effervescent tablet is used for detecting workpiece damage, auxiliary spraying of a contrast toner is not needed, the effervescent tablet is convenient to use, the detection cost is reduced, the width of a crack which can be detected can reach 0.1 micrometer, the length of the crack can reach 0.5 micrometer, and the detection sensitivity is high. The effervescent tablet of the invention can be prepared into solidThe tablets with fixed specification and quality are convenient to use and transport.

摘要：【中文】本发明属于隧道工程技术领域，具体涉及一种地铁隧道掘进暗挖方法。本方法包括地层组合工程性质模型计算以及隧道浅埋暗挖施工两大步骤；地层组合工程性质模型计算步骤包括将隧道沿线地层划分为层组和亚组两个层级，划分后的地层组合通过“层组+亚组”表示；且选择地表至隧底以下50m范围内的地层进行组合，代入地层组合工程性质模型中进行计算分析，而后进行隧道浅埋暗挖施工流程。本发明通过对隧道工程建设影响深度50m范围内的工程地质层组进行划分及深入分析，以对整个场地工程地质层组进行总体概化，并能紧接施工流程，确保浅埋暗挖隧道施工过程安全、顺利进行。 【EN】The invention belongs to the technical field of tunnel engineering, and particularly relates to a subway tunnel tunneling and underground excavation method. The method comprises two steps of calculation of a stratum combined engineering property model and shallow excavation construction of a tunnel; the stratum combination engineering property model calculation step comprises the steps of dividing stratum along a tunnel into two levels of a stratum group and a subgroup group, wherein the divided stratum group is represented by a 'stratum group + subgroup'; and selecting stratums within a range from the earth surface to the position 50m below the tunnel bottom for combination, substituting the stratums into a stratum combination engineering property model for calculation and analysis, and then carrying out a tunnel shallow-buried underground excavation construction process. According to the invention, the engineering geological formation within the influence depth range of 50m of tunnel engineering construction is divided and deeply analyzed, so that the overall generalization of the engineering geological formation in the whole field is carried out, the construction process can be followed, and the safe and smooth construction process of the shallow-buried and underground-excavated tunnel is ensured.