...集中控制式；功能分散式；分层分布式 [gap=568]Key words: automated multi-layered storehouse supervisory system structure; common control type; function disperser-like type; lamination distributional type ..
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Type of fodder grass, common in Africa. Also used for erosion control.
一种饲料草，在非洲很普遍，也用于控制水土流失。
This paper analyzes the leakage and its influence factors of the common-rail accumulator type electronic control injector. The static and dynamic sealing test is done.
全面分析了共轨蓄压式电控喷油器的泄漏部位及影响因素，进行了静态和动态的密封性试验。
The structure and principle of the LV-3 type height control valve in Japan are described. And the common troubles appeared in application of the height control valve are analyzed.
介绍了日本LV 3型高度控制阀的结构和原理，并分析了该高度控制阀在运用中出现的常见故障。
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