... valve train life 气门系寿命 Valve Life Test 阀门使用寿命测试仪 Pneumatic valve life-span 气动阀寿命 ...
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Test shows that the service life of the drill pump valve and liner after carburizing and vanadiumizing are greatly extended.
试验表明，钻井泵泵阀和缸套经增碳-钒化处理后其使用寿命显著延长。
It dedicated to accomplish cylinder and valve impulse fatigue test and valve leakage test, testing the cylinder and valve long life under high pressure impulse.
它旨在完成液压缸和阀的脉冲疲劳试验和阀的泄漏试验，测试液压缸和阀在高压脉冲之下的耐久性。
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