Standard switch entirely suitable for millivolt service on self-energized control circuits of gas fired heating installations.
在燃气加热安装系统的自激控制电路中，整个标准开关适用于毫伏电压。
Knowledge-creation: knowledge is self-organizing and creation of it is energized by putting people together in a place and providing a context ( "Ba")
知识的创造性：知识是自组织的，它来自于聚集在一起的一群人，在特定的环境下（ "Ba"）的创造力。
The design calculation of the large O ring rubber self energized seal (without bolt and nut )used for the vacuum equipment and its application results are introduced.
介绍真空设备法兰采用大直径O形环橡胶自紧式密封（不用螺栓和螺母）的设计计算及其应用效果。
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