图1为该阀的结构与工作原理示意图。
Figure 1 for the valve structure and working principle diagram.
本文介绍了这种转向液压系统的结构与工作原理。
The construction and operating principle of this system are described in this article.
从结构与工作原理等各个方面对可编程控制器(PLC)进行了介绍。
In the paper, programmable controller (PLC) are introduced from several respects, such as construction and work principle, etc.
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