其中一个有效的方法就是优选泵筒和柱塞的材料和表面处理工艺。
One effective way is preferred pump barrel and plunger of materials and surface treatment processes.
而泵筒下部固定泵柱塞上行时，泵筒不会发生弯曲，只是其柱塞在稠油井中下行时泵筒才会发生纵向弯曲。
The bending of pump barrel will not happen as low part fixed pumping piston going downward that only happens when it works in heavy oil well.
该模型不仅适用于柱塞与泵筒正常间隙漏失的仿真计算，也适用于非正常间隙严重漏失的计算。
This model is not only adaptable to the calculation of the leakage of the normal clearance, but also to the calculation of the severe leakage of the abnormal clearance.
该泵对泵筒、柱塞、固定阀做了设计，改善了泵筒受力状况，提高了螺纹的密封性能和抗拉强度。
The barrel, plunger and standing valve of the pump were designed, improving the barrel's force conditions and reinforcing the screw thread's sealing performance and tensile strength.
通过建立砂粒自锁条件及实测长石砂岩、石英砂岩与泵筒镀铬层或氮化层的滑动摩擦系数值，证实了对柱塞拉伤失效原因的推测是正确的。
The deduction is confirmed by establishing self locking conditions and determining the sliding friction coefficients between sand and chromium plating layer and between sand and nitrided surface.
形成脊的突起(56)设在注射筒顶部和柱塞头中的一个上。
A protrusion (56) forming a ridge is disposed on one of the roof of the barrel and the plunger head.
闭合阀件通过柱塞与小瓶和注射器筒体之间的流体通路相关联。
A closed valve is associated with a fluid passageway between the vial and the syringe barrel through a piston.
增压器高压腔体为承受周期性环向高应力的厚壁筒，在超高压下缸价内径与柱塞外径应变值不同，从而形成工作间隙。
The high pressure cylinder of the booster is a thick wall barrel which can bear the high periodic circumferential stress.
一种注射器(1)，包括筒(2)，一柱塞(3)可滑动且密封地接合在该筒中，并且针结合到筒(2)的一端。
A syringe (1) comprises a barrel (2) with a plunger (3) in slidable and sealing engagement therein, and a needle attached to one end of the barrel (2).
驱动柱塞、安装过滤网的内筒、浮力阀顺序连接组成转子；
The drive cylinder, outer shell of built-in board brush, intermediate joint and sand collector are connected into stator;
驱动柱塞、安装过滤网的内筒、浮力阀顺序连接组成转子；
The drive cylinder, outer shell of built-in board brush, intermediate joint and sand collector are connected into stator;
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