change valve

基本解釋

By the analysis of the measuring results, the basic factors which would change valve timing were given.
在對測定結(jié)果分析的基礎(chǔ)上提出了影響配氣正時變動的主要因素。
The hydraulic cylinder can be used alone or connected in series. One end of the hydraulic cylinder connects to the motor driven change valve, the other end connects to the rod string.
液壓油缸可單獨使用，也可串聯(lián)使用，它一端與機動式換向閥連接，另一端與抽油桿柱連接。
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The structure is: the pull rod (8) which is in the cylinder rod(1), the change valve(16) which is connected with cylinder(13) and the spring installation which is located on the left of plunger(9);
該機構(gòu)的結(jié)構(gòu)是：位于活塞桿（1）內(nèi)腔的拉桿（8），與油缸（13）左部相連的換向閥（16），以及安裝在活塞（9）左端的彈簧裝置；
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