种球

In order to make the alloy steel powder which conform to our need,the technique of high energy ball mill is studied.

高能球磨法是制备超细粉体的一种重要方法，但对不同的材料，制备粉体所需的工艺区别较大。

The Birmingham hip-resurfacing system, manufactured by the Orthopaedic Reconstruction Division of Smith %26amp; Nephew is a smooth chrome-cobalt ball-and-socket joint that preserves more of the patient s natural bone structures and stability, covering the joint s surfaces with an all-metal implant that more closely resembles a tooth cap than a hip implant.

Birmingham臀部重塑系统是由Smith %26amp； Nephew公司(Memphis， TN， USA)的整型外科重建分部制造的，是一种光滑的铬钴球型套筒关节连接装置，能够保留患者自然骨骼结构和稳定性，全金属移植物覆盖关节表面，更象一个牙齿帽状结构而不是一个臀部移植物。

Ball and plug is the same type of valve, only its closure is a sphere, the sphere rotates around the body axis to achieve open and close a valve.

球阀和旋塞阀是同属一个类型的阀门，只有它的关闭件是个球体，球体绕阀体中心线作旋转来达到开启、关闭的一种阀门。

The gauge has three kinds of indications red-white turnover ball or column and buoy can be selected.

该液位计指示形式有红白翻球或翻柱、浮标跟踪三种形式可选。

The gauge indicates clear, observes convenient. It has three kinds of indications red-white turnover ball or column and buoy can be selected.

该液位计指示清晰，观察方便，就地指示形式有红白翻球或翻柱、浮标跟踪三种形式可选。

Selected 7 - 10cm Qi mouth Schizothorax 50, to three kinds of Chinese herbal medicine ball method (clove, cinnamon, dried orange peel) alignment mouth Schizothorax attractant effect of experiment.

选用7--10cm齐口裂腹鱼50尾，以触球法进行三种中草药对齐口裂腹鱼诱食效果的试验。

The invention provides a method for preparing a tube-shaped cathode of a direct methanol fuel cell, belonging to the fuel cell field and comprising the steps of: dispensing a single solution for gel injection molding at first, then adding a mesophase bituminous coal micro ball into the single solution and stirring evenly to obtain stable slurry, then casting the slurry into a die, preserving heat until the single solution reacts with a cross-linker completely to obtain a carbon-biscuit, after drying and sintering the biscuit in vacuum, preparing a diffusion layer and a catalyst layer on the surface by dipping process, and then coating polyester electrolyte membrane with a burette, rolling the carbon on a warm table to solidify the electrolyte membrane.

一种制备直接醇燃料电池管状阴极的方法，属于燃料电池领域。本发明首先配制凝胶注模用单体溶液，之后将中间相沥青炭微球加入到单体溶液中，搅拌均匀得到稳定的浆料，然后将浆料浇注到模具中，保温至单体与交联剂完全反应，得到炭管素坯，将素坯烘干、真空烧结后，在其表面采用浸渍工艺制备扩散层、催化剂层，然后采用滴管涂覆聚合物电解质膜，在加热台上对炭管进行滚压，使电解质膜固化。

In order to solve the existing problems of drilling gravel and cobble stratum,common tungsten carbide-insert drill bits, composite diamond-tungsten carbide button bits and impregnated diamond-tungsten carbide bar bits were designed and tested successively.

针对卵砾石地层的钻进实践，先后设计与试验了三种类型的钻头；普通八角合金钻头、金刚石-硬质合金复合球齿钻头与孕镶金刚石-针状合金复合式钻头。

The composition, heat treatment process, structure and properties of a low-chromium cast iron ball which is suitable for large scale ball mill of copper ore processing were studied.

探索了适应于铜矿大型球磨机的低铬铸铁磨球成分、热处理工艺及组织性能，获得了一种贝氏体+马氏体组织的低铬铸铁及其强韧性处理的工艺。

General –For both the basic and CPVC housed stem extensions, the bottom rod coupling utilized for all ball valve extensions is fitted with turning-stops.

通用–对于基本的和CPVC封装的两种阀杆加长件，用于所有球阀加长件上的底部杆连接件都配置旋转止动装置。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。