摘要：【中文】本发明公开了核‑双壳结构复合镍钴锰三元前驱体材料及其制备方法和应用，该核‑双壳结构复合镍钴锰三元前驱体材料包括：内核、次外壳层和最外壳层，内核材料的化学式为Ni_x1Co_y1Mn_{(1‑x1‑y1)}CO₃，0＜x₁＜1，0＜y₁＜1，0＜1‑x₁‑y₁＜1；次外壳层包覆在内核至少一部分外表面上，次外壳层材料的化学式为Ni_x2Co_y2M_{(1‑x2‑y2)}(OH)₂，M为Mn和/或Al，0＜x₂＜1，0＜y₂＜1，0＜1‑x₂‑y₂＜1；最外壳层包覆在次外壳层的至少一部分外表面上，最外壳层材料为金属氢氧化物和/或金属氧化物。由此，采用该核‑双壳结构复合镍钴锰三元前驱体材料制备的正极材料而制作的单体电池，在具有高比能量的基础上可以实现长循环寿命，从而使得装载该电池的车辆具有优异的续航能力，满足消费者的使用需求。 【EN】The invention discloses a core-double shell structure composite nickel-cobalt-manganese ternary precursor material, a preparation method and application thereof, wherein the core-double shell structure composite nickel-cobalt-manganese ternary precursor material comprises the following components in parts by weight: a core, a secondary shell layer and an outermost shell layer, wherein the chemical formula of the core material is Ni_x1Co_y1Mn_{(1‑x1‑y1)}CO₃，0＜x₁＜1，0＜y₁＜1，0＜1‑x₁‑y₁Less than 1; secondary outer shell coatingOn at least a portion of the outer surface of the core, the material of the subcoating layer has the chemical formula Ni_x2Co_y2M_{(1‑x2‑y2)}(OH)₂M is Mn and/or Al, 0 < x₂＜1，0＜y₂＜1，0＜1‑x₂‑y₂Less than 1; the outermost shell layer is coated on at least one part of the outer surface of the secondary shell layer, and the outermost shell layer is made of metal hydroxide and/or metal oxide. Therefore, the single battery manufactured by adopting the anode material prepared from the core-double shell structure composite nickel-cobalt-manganese ternary precursor material can realize long cycle life on the basis of high specific energy, so that a vehicle loaded with the battery has excellent cruising ability, and the use requirement of consumers is met.

摘要：【中文】本发明涉及一种多功能直升机尾桨试验系统，包括：试验台体、三相异步电机、电机转速控制系统、桨距控制系统、变速箱、涵道尾桨传动轴、涵道尾桨、常规结构尾桨传动轴、常规结构尾桨、测力杆系、测力天平、第一扭矩传感器、第二扭矩传感器、声级计、风速风温测量仪和数据采集系统。本发明可满足常规结构尾桨和涵道尾桨等多种结构形式尾桨的试验要求，可进行性能试验、动力学试验、噪声研究、地面载荷测量等多种试验项目，完全模拟真机进行试验，边界条件与尾桨工况一致性高。 【EN】The invention relates to a multifunctional helicopter tail rotor test system, which comprises: the test bench comprises a test bench body, a three-phase asynchronous motor, a motor rotating speed control system, a propeller pitch control system, a gearbox, a ducted tail rotor transmission shaft, a ducted tail rotor, a conventional structure tail rotor transmission shaft, a conventional structure tail rotor, a force measuring rod system, a force measuring balance, a first torque sensor, a second torque sensor, a sound level meter, a wind speed and wind temperature measuring instrument and a data acquisition system. The invention can meet the test requirements of tail rotors with various structural forms such as tail rotors with conventional structures, duct tail rotors and the like, can carry out various test items such as performance tests, dynamic tests, noise researches, ground load measurement and the like, completely simulates a real machine to carry out tests, and has high consistency of boundary conditions and tail rotor working conditions.

摘要：【中文】本发明公开了一种与小麦粒长主效QTL紧密连锁的分子标记及其应用，所述分子标记是以小麦京411基因组DNA为模板，用SEQ ID NO:1所示的上游引物和SEQ ID NO:2所示的下游引物进行PCR扩增得到的DNA片段，其核苷酸序列如SEQ ID NO:3所示。本发明提供的分子标记与qKl‑1BL紧密连锁，能够促进该位点在推广品种中转移应用，也有利于该位点与其它产量相关位点的聚合育种；本发明提供的分子标记为Indel标记，具有共显性，其引物对具有扩增稳定、检测快捷高效等优点，可以快速确定小麦资源中是否存在qKl‑1BL及存在型态，并预测小麦的粒长特性。 【EN】The invention discloses a molecular marker tightly linked with a major QTL of wheat grain length and application thereof, wherein the molecular marker is a DNA fragment obtained by carrying out PCR amplification by using wheat Jing 411 genome DNA as a template and using an upstream primer shown in SEQ ID NO. 1 and a downstream primer shown in SEQ ID NO. 2, and the nucleotide sequence of the DNA fragment is shown in SEQ ID NO. 3. The molecular marker provided by the invention andqKl‑1BLthe close linkage can promote the transfer application of the locus in the promoted variety and is also beneficial to the polymerization breeding of the locus and other yield-related loci; the molecular marker provided by the invention is an Indel marker, has codominance, has the advantages of stable amplification, quick and efficient detection and the like of a primer pair, and can quickly determine whether wheat resources exist or notqKl‑1BLAnd presence pattern, and predicting grain length characteristics of wheat.