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1·This article introduces the engine important parts cylinder head valve pipe hole and sealing trip on their technical method and analyse used in the machining center.

介绍了发动机上重要部件汽缸盖中气门导管孔和密封带在加工中心上的工艺方法，并对其进行了分析。

2·Shipbuilding . head of sounding pipes with self - acting valve . details of body.

造船工业。带自动阀的测深管测头。阀体详图。

3·Stainless steel valve head and seats provide long service life.

不锈钢阀头和阀座延长使用寿命。

4·To maintain the spool in the head and valve seat rings for tight closure is important.

保持阀芯头与阀座环对中，对于严密关闭是重要的。

5·Seal leakage test on the inlet valve under a hydrostatic pressure equal to maximum static head. The leakage shall not exceed the amount guaranteed by the Contractor.

对入口阀在最大静水压力下的密封泄漏试验。泄漏量不得超过承包商所保证的量。

6·The main products are ve pump pump head distribution, injector, plunger, Valve and so on.

主要产品有VE分配泵泵头，喷油嘴，柱塞，出油阀等。

7·Through dividing electronic expansion valve from evaporator system and based on constant gain of superheat open loop rule, the compensation theory of valve head was analyzed.

通过将电子膨胀阀与受控对象(蒸发器)细化分开来，并依据恒定开环增益准则从理论上分析了阀头补偿原理。

8·The influence of flowing area, structural of valve head, inlet density and outlet specific volume to mass flow coefficient were studied.

得到了膨胀阀的流通面积、阀头结构、膨胀阀入口密度、阀后比容对流量特性的影响，并拟合了流量系数关联式。

9·When the closed channel, the wedge-shaped head with a stem to open up the ball and pressed to seal the valve seat.

当关闭通道时，用阀杆的楔形头使球体涨开与阀座压紧达到密封。

10·Optimizing the materials properties and structure parameters of giant magneto resistance (GMR) spin valve head is of key importance to application.

优化材料性能参数和自旋阀巨磁电阻磁头的结构参数是微磁器件实用化的关键。