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1·USES HPB591 gb brass valve head, quality guaranteed.

采用HPB591国标黄铜阀头，品质有保障。

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

不锈钢阀头和阀座延长使用寿命。

3·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。

4·Paper concentrates on the results of the tests on the effects of the flow passage between valve head and diffuser on flow induced vibrations.

本文主要叙述阀碟与阀座之间所形成的流道对流体诱发振动影响的试验研究结果。

5·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。

6·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。

7·The valve head may be made by single press and sintering, double press and sintering, forging and machining, forging and sintering, and dynamic magnetic compaction and sintering.

气门头可通过一次压制和烧结、两次压制和烧结、锻造和机加工、锻造和烧结及动磁压制成形和烧结而制成。

8·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。

9·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。

10·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。