摘要：【中文】本发明属于主动降噪耳机技术领域，尤其是一种数字ANC自动仿真测试方法，其包括以下步骤：S1：由技术人员将耳机手动做ANC将测试数据存入以项目名称命名的数据库里面；S2：由员工将被测耳机放入测试架，测试耳机的基本条件；S3：将测试数据给到测试系统分析并计算目标曲线；S4：调整滤波器将滤波器的曲线最拟合目标曲线；S5：将计算后的滤波器曲线写入耳机并测试，在电脑上点击测试并扫描产品二维码，耳机测试完成后会弹出测试结果并会将测试中的所有数据放入由产品二维码生成的单独文件夹内，本发明提高了产品的良品率，节约成本，使ANC耳机的量产不再是行业内直通率最低的产品。 【EN】The invention belongs to the technical field of active noise reduction earphones, and particularly relates to a digital ANC automatic simulation test method which comprises the following steps: s1: a technician manually makes an ANC on the earphone and stores test data in a database named by a project name; s2: placing the earphone to be tested into a testing frame by an employee, and testing the basic conditions of the earphone; s3: sending the test data to a test system for analysis and calculating a target curve; s4: adjusting the filter to best fit the curve of the filter to the target curve; s5: writing the calculated filter curve into an earphone and testing, clicking the test on a computer and scanning the two-dimension code of the product, popping up the test result after the earphone test is finished, and putting all data in the test into an independent folder generated by the two-dimension code of the product.

摘要：本发明提供了一种合金钢及其制造方法，该制造方法包括：初炼钢水；在钢水的C含量为0.03％～0.06％，P含量不大于0.015％，S含量不大于0.020％时，向钢包出钢；在出钢过程中，调整钢水的Si含量为0.17％～0.37％，Mn含量为0.40％～0.70％，Cr含量为0.80％～1.10％，Mo含量为0.40％～0.55％，并调整钢水的氧含量在0.0020％以下；控制钢水的Als含量为0.02％～0.03％，Als表示酸溶铝；在钢包精炼炉中精炼钢水使氧含量在0.0010％以下，精炼完成时钢水的C含量为0.12％～0.18％；对钢水进行循环真空脱气处理，并调整钢水的Ti含量为0.006％～0.010％，从而得到合金钢，该合金钢包含0.12％～0.18％的C、0.17％～0.37％的Si、0.40％～0.70％的Mn、0.80％～1.10％的Cr、0.40％～0.55％的Mo、0.006％～0.010％的Ti和0.008％～0.015％的Als，余量为Fe和不可避免的杂质，合金钢中各元素的含量均为重量百分比含量。

摘要：【中文】本发明涉及一种钕铁硼磁粉的制备方法，其属于钕铁硼磁体制作方法技术领域。包括如下工艺步骤：将钕铁硼薄带合金放入氢处理炉中，氩气气氛下升温至390℃~480℃后，通入氢气，维持氢气压力0.15Mpa~0.20Mpa进行吸氢。之后停止加热开始降温，温度降至220℃或以下时，用氩气置换氢气。待降至室温后再升温至550℃抽真空脱氢5小时，再使用气流磨对氢处理后的合金进行磨粉。本发明通过控制吸氢反应的温度，将富钕相和主相的氢破碎过程分开进行，使得氢破碎更彻底和均匀，气流磨磨粉过程中磨粉效率更高，粒度分布更窄，磁粉收率更高。提高了原材利用率，并为磁体性能的提高奠定了基础。 【EN】The invention relates to a preparation method of neodymium iron boron magnetic powder, and belongs to the technical field of manufacturing methods of neodymium iron boron magnets. The method comprises the following process steps: and (3) putting the neodymium iron boron thin strip alloy into a hydrogen treatment furnace, heating to 390-480 ℃ under an argon atmosphere, introducing hydrogen, and maintaining the hydrogen pressure of 0.15-0.20 Mpa to absorb hydrogen. Then, the heating was stopped and the temperature was lowered to 220 ℃ or below, and then the hydrogen gas was replaced with argon gas. After the temperature is reduced to the room temperature, the temperature is raised to 550 ℃, the vacuum pumping and the dehydrogenation are carried out for 5 hours, and then the alloy after the hydrogen treatment is milled by using an air flow mill. According to the invention, the hydrogen crushing process of the neodymium-rich phase and the main phase is separately carried out by controlling the temperature of the hydrogen absorption reaction, so that the hydrogen crushing is more thorough and uniform, the powder grinding efficiency in the powder grinding process of the jet mill is higher, the particle size distribution is narrower, and the magnetic powder yield is higher. Improves the utilization rate of raw materials and lays a foundation for improving the performance of the magnet.

摘要：【中文】一种液压锤的提升油缸及其阀块组合，包括外缸筒、内缸筒、活塞杆、下端通盖、环形油道、阀块、上部耳环、第二换向插装阀、第三换向插装阀和单向插装阀；阀块位于外缸筒和上部耳环之间；内缸筒、外缸筒置于阀块的中心凹坑和柱形凸台后予以紧固；内缸筒底部油孔有多个，将下液压腔与环形油道连通；上液压腔和下液压腔通过单向插装阀打开后实现贯通；第二换向插装阀、第三换向插装阀和单向插装阀分别安装于阀块上位于第一和第三内油道、第四和第六内油道、第二和第五内油道之间的安装位置。本发明具有打击能量大、液压油换向压力波动小、液压管路振动小、液压系统高效稳定、高压油利用率高和打桩效率高等特点。 【EN】A lifting oil cylinder of a hydraulic hammer and a valve block combination thereof comprise an outer cylinder barrel, an inner cylinder barrel, a piston rod, a lower end through cover, an annular oil duct, a valve block, an upper lug ring, a second reversing cartridge valve, a third reversing cartridge valve and a one-way cartridge valve; the valve block is positioned between the outer cylinder barrel and the upper ear ring; the inner cylinder barrel and the outer cylinder barrel are arranged in the central pit and the cylindrical boss of the valve block and then fastened; a plurality of oil holes are formed in the bottom of the inner cylinder barrel and are used for communicating the lower hydraulic cavity with the annular oil duct; the upper hydraulic cavity and the lower hydraulic cavity are communicated after being opened through the one-way cartridge valve; the second reversing cartridge valve, the third reversing cartridge valve and the one-way cartridge valve are respectively arranged on the valve block and are positioned at the installation positions between the first inner oil duct and the third inner oil duct, between the fourth inner oil duct and the sixth inner oil duct, and between the second inner oil duct and the fifth inner oil duct. The invention has the characteristics of large striking energy, small hydraulic oil reversing pressure fluctuation, small hydraulic pipeline vibration, high efficiency and stability of a hydraulic system, high utilization rate of high-pressure oil, high piling efficiency and the like.

摘要：【中文】一种液压锤的液压系统，包括动力源，油箱，提升油缸，冲击锤芯，第二和第三电磁换向阀，第二、第三和单向插装阀，第二、第三和第四蓄能器，第二、三和第四单向阀，高压管路，低压管路，行程开关和控制单元；提升油缸分别通过其内缸筒、外缸筒置于阀块的中心凹坑和柱形凸台予以紧固；内缸筒底部油孔有多个，将下液压腔与环形油道连通；上、下液压腔通过单向插装阀打开实现贯通；第二、第三、单向插装阀分别安装于阀块上位于第一和第三内油道、第四和第六内油道、第二和第五内油道之间的安装位置。本发明具有打击能量大、液压油换向压力波动小、适应液压油高速流动和及时换向、液压元件损坏率低、液压管路振动小和打桩效率高等特点。 【EN】A hydraulic system of a hydraulic hammer comprises a power source, an oil tank, a lifting oil cylinder, an impact hammer core, a second electromagnetic reversing valve, a third electromagnetic reversing valve, a one-way cartridge valve, a second accumulator, a third accumulator, a fourth accumulator, a second check valve, a third check valve, a fourth check valve, a high-pressure pipeline, a low-pressure pipeline, a travel switch and a control unit; the lifting oil cylinder is fastened by an inner cylinder barrel and an outer cylinder barrel which are respectively arranged in a central pit and a cylindrical boss of the valve block; a plurality of oil holes are formed in the bottom of the inner cylinder barrel and are used for communicating the lower hydraulic cavity with the annular oil duct; the upper hydraulic cavity and the lower hydraulic cavity are communicated by opening the one-way cartridge valve; the second, third and one-way cartridge valves are respectively arranged on the valve block at the installation positions between the first and third inner oil ducts, the fourth and sixth inner oil ducts and the second and fifth inner oil ducts. The invention has the characteristics of large striking energy, small hydraulic oil reversing pressure fluctuation, adaptation to high-speed flow and timely reversing of hydraulic oil, low hydraulic element damage rate, small hydraulic pipeline vibration, high piling efficiency and the like.

摘要：一种手持式螺栓除锈装置，属于螺栓修复技术领域，包括具有手柄、金属杆、轴承、锥齿轮啮合装置、外螺纹的螺杆、螺旋丝线、金属外壳、螺栓定装置固定，所述手柄有金属杆固接，且金属杆与轴承过盈配合，所述锥齿轮与螺杆相接触的部分设有内螺纹，所述螺旋丝线上具有三角金属倒刺，所述金属外壳与螺栓固定装置使用螺栓连接且螺栓固定装置使用正反丝杠调节两边卡具，本发明装置手柄连接装置的设置，改变了除锈时工人出力的方向，锥齿轮的设置使做功更加省力，便于操作，提高了除锈效率；且锥齿轮大小不同，摇动手柄使螺旋丝线均匀缓步螺旋向下移动，使螺栓除锈更干净，提高了除锈质量；螺栓固定装置使用正反丝杠控制，使两边卡具同开同和，保证螺栓在除锈装置的中心位置，有利于除锈更加精确；金属外壳的设置，可以防止螺栓除锈时铁锈的飞溅，有益于减小对环境的污染。

摘要：本发明公开了一种具有整流结构的双梯度磨料喷嘴，喷嘴本体的内部流道包括依次连接的圆柱形的入水口、收缩圆锥形的一次加速部、收缩圆锥形的二次加速部、圆柱段和扩张圆锥形的出水口，在入水口内壁表面沿着轴向均匀分布有起到整流和降低喷嘴内部湍流扰动作用的多个凸起肋，凸起肋延伸到一次加速部的收缩圆锥面，一次加速部的收缩圆锥面角度大于二次加速部的收缩圆锥面角度，形成两级梯度加速，流体和磨料颗粒在通过一次加速部和二次加速部后得到充分加速，双梯度的设计能够有效提高喷嘴射流速度，增强射流的破坏效果，并且缩短了喷嘴的轴向尺寸，使得喷嘴在井眼等尺寸狭小的空间中得以应用。

摘要：一种精细化施工钢梁柱连接节点，包括带柱端帽的矩形钢柱，所述带柱端帽的矩形钢柱上部设置有H型钢柱，所述H型型钢柱四周有带有端板的H型钢梁，它们之间均由高强螺栓连接，所述连接节点不仅满足力学特性，还能够满足现阶段人们对纵横跨度的空间的需求，更易于达到高效率施工，而结构构造形式独特，结构易于安装或更换，当某个构件在服役期不能正常使用，可以实现快速更换，不仅减少维护成本，而且还可以实现快速施工，同时降低了施工人员的工作量，更有利于绿色建筑，提高了施工效率，可以达到精细化施工，然后结构构件均由机械设计和工厂化生产的，构件比较精密准确，几乎没有加工误差，现场只需吊装和拧紧螺栓就可以完成工作，减少工人的工作量，提高了工程质量和工作效率，可以达到精细化施工。

摘要：本发明属于物质使用障碍技术领域，具体涉及一种物质使用障碍患者报告结局测评系统及方法。当前物质使用障碍患者的治疗效果和生活质量评估主要依赖于传统的问卷调查和临床观察，存在着主观性和不准确性的问题，基于此，本发明通过收集患者的自我报告数据，结合人工智能算法进行分析，预测患者的复发风险，并及时向医生和患者发出预警，以提高治疗效果和预防复发。具有数据准确性高、预测精度高、操作简单等优点，可以有效提高物质使用障碍患者的治疗效果和预防复发。

摘要：一种基于梯度下降算法的主配用一体化故障定位方法及系统。在该故障定位方法中，基于梯度下降算法对实现主配用一体化网络模型的故障定位，同时基于上述方法，构建了由数据采集模块，分析模块以及准确率评估模块构成的故障定位系统。本方法以一个IEEE标准33节点拓扑算例进行验证。算例通过模拟电网故障，通过数据采集模块统计各节点测量多维度数据并预处理，运用神经网络梯度下降算法思想，建立多层神经网络，选择合适的激励函数进行非线性激励，基于梯度下降算法对模型定位的准确度进行优化，在故障定位计算模块中给出故障支路定位结果。算例仿真表明，能够以较高的精确度对故障发生支路进行定位。该故障定位方法可以有效地定位电网故障发生支路，对电网的运行抢修提供有效的决策依据，减少经济损失。