头

With morphology characteristics of erosion concave of Ag and Pd contact materials in nitrogen and air being compared, influence on erosion, welding and breakdown voltage of contact for nitrogen and SF_6 being analyzed, influence on contact for the formic acid, toluene, carbinol and distilled water being analyzed, it was showed that the influence on performance parameters of relay contact for various atmospheres is very com...

通过比较触头材料Ag和Pd分别在氮气和空气中侵蚀凹坑的形状特征，分析了氮气和SF6等气氛对触头侵蚀、熔焊、耐压的影响，及甲酸、甲苯、甲醇、蒸馏水等对触头的影响，表明各种气氛对继电器触头性能参数的影响十分复杂，该影响涉及对电弧运动规律的影响和与材料的化学反应。

CJX2-d The operating mechanism is direct operation type ,the comtact has double comtas;Combinatiom function,exce pt the imstallation side,the rest of the sides can be added with auxiliary comtact group(F4-d) or interlocking mech anism; The head can be equipped with auxiliary contact group (F4-d)or (F4-d2) or air delaying comtact (sk2-2/3d);The coil wiring terminal can be connected with time delayer and so on function modules.

CJX2-d动作机构为直动式、触头为双断点；组合功能、除安装面外，其余各面均能加装附件；两侧可加装辅助触头组（F4-d）或联锁机构；上方可加装辅助触头组（F4-d）或（F4-d2）或空气延时头（SK2-2/3d）；线圈接线端可加装时间延时器等各种功能模块

Guangzhou City, Ho Li Stainless Steel Products Factory Main Products Fashion has stainless steel shelves, stainless steel blender blade, stainless steel metal products (commonly Block, U-type pumping hands, lock Activity card, Ox Lee, the seventh song, Yuan Xin hinges, decorative cover, seven Qu word glass folder, hose hinge teeth, small to take over the meson, small cow door, metadata and, welding glass folder, directly to the glass folder, Park Top screw head, get a barrel, straight out of the screw head, welding screw head, Hengmen Play , elastic cross-door plug, trunk sleeve with stainless steel chain inserted door with lock ring card, straight trunk with side door horizontal interpolation, long locks card sleeve, rectangular key drainage, triangle decorated occasional bending as nose, triangular drainage key, day care word ornaments, doll head) can be customized to any specifications of stainless steel products, widely used in various industries.

广州市合利不锈钢制品厂主要产品有不锈钢时装货架，不锈钢搅拌机叶片，不锈钢五金产品（通座，U型抽手，活动锁牌，牛利，七字曲，元心铰，饰盖，七字曲玻璃夹，喉牙铰，小接手，介子，小门牛，元并，焊接玻璃夹，直出玻璃夹，园顶螺丝头，揽桶，直出螺丝头，焊接螺丝头，横门插，弹力横门插，象鼻套筒，带不锈链门插，带圈锁牌，直象鼻，带方横门插，长锁牌，套筒，长方形渠匙，三角饰托，弯象鼻，三角渠匙，日字饰托，公仔头）可订做任何规格不锈钢产品，广泛应用于各个行业。

In order to avoid repeating job in the most extent and improve efficiency of design, using the idea of structure parametric design. Based on APDL, the FEA drill chuck model can be easily created by adjust several geometric parametric and the process of FEA is automatically executed.This paper discusses the affections of different parameters for the stress capability of drill chuck. The high efficiency drill chuck strength analysis system can help designer develop new products.

为避免重复工作和提高分析效率，本文结合ANSYS提供的二次开发参数化设计语言APDL，实现了对有限元分析软件ANSYS命令流的调用，解决了通用程序与专业需求之间的矛盾，完成了钻夹头有限元参数化程序分析，对钻夹头的强度性能进行了分析和仿真；模拟钻夹头实际生成过程中的性能测试试验，探讨加工误差引起的不同装配角度等参数对钻夹头强度性能的影响。

Based on the technological requirements of drip irrigation and the factors influencing the dripper discharge, the importance of studying the design models for dripper discharge was indicated in this paper, as well as, the foundation of designing the dripper discharge for point drip irrigation and linear drip irrigation, especially the foundation of designing the dripper discharge meeting with the soil moisture uniformity for line source drip irrigation.

本文从滴灌的技术要求及滴头流量的影响因素方面指出了研究滴头流量设计方法的重要性及点源和线源滴灌的滴头流量设计依据，特别是满足线源滴灌土壤湿润均匀性要求的滴头流量设计依据。

The results indicated that irrigation water supply and dripper discharge had extreme effects on the moisture uniformity in soil along the drip irrigation pipe direction for line source drip irrigation, the soil moisture uniformity would be raised with the increase of irrigation quantity and dripper discharge.

试验表明：线源滴灌下，灌水量、滴头流量、滴头间距对沿滴灌管方向的土壤湿润区均匀性影响最大，随着滴头流量或灌水量的增加以及滴头间距的减小，湿润均匀性提高。

Is the main product has: Die oilstone, ironwork oilstone, ruby oilstone, fiber oilstone and tanneries grinding head, grinding head sponge, wool grinding head, rubber cement, emery cloth wheel, steel wire wheels, diamond paste, alloy type, such as grinding wheel.

现主要产品有：模具油石，铁工油石，红宝石油石，纤维油石，牛皮磨头，海棉磨头，羊毛磨头，橡胶磨头，砂布页轮，钢丝轮，钻石膏，合金类，砂轮类等。

In Hangchow it has four generations each year and the time of its occurrence is well synchronized with that of the scale.

根据测定，隐斑瓢虫对日本松干蚧各虫态的捕食能力较强，一头成虫的日平均捕食量为：显露若虫13.33头，雌成虫4.27头，卵囊3.67个(每个卵囊内平均有卵265.5粒)，雄蛹28.27只；一头幼虫全期(或2—4龄和3—4龄)分别能捕食显露若虫39.20—105.56头，雌成虫40.80—47.79头，卵囊39.38—41.79个，雄蛹220.50只。

Each group was vaccinated with Hog cholera tissue vaccine, cell vaccine or spleen vaccine with three dose levels (1×, 2×or 3×recommended doses).

随机分成9组，每组又分为3个小组，每小组3头，分别免疫猪瘟组织苗、猪瘟细胞苗和猪瘟脾淋苗，各疫苗分别采用1头份、2头份和3头份3个剂量。

In homogeny cluster head hierarchical topology, the article first discusses the selection of cluster head. With a given formula on weights, a suitable cluster head node is selected. And according to the relationship of location with cluster head node, the gateway nodes and the distributed gateway nodes are selected.

簇头同构的分簇算法中，首先讨论了簇头的选择，给出了一个权值设定公式，按照权值大小，选择出合适的簇头节点，然后根据和簇头节点的位置关系，确定网关节点和分布式网关节点。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。