When the module is collapsed (or minimized), the choices are maximize and restore (open the module to normal size so that its contents are displayed).
当模块回缩时(或最小化时),显示的选项为maximize和restore(打开此模块到正常大小以便其内容可以被显示)。
Open needle valve "b" and vent or bypass needle valve, bleeding to atmosphere, then closing needle valve "b" restores the system to a normal static condition.
开启针形阀“B”和排气或旁路针形阀,排放到大气中,然后关闭针形阀“B”,将系统恢复到正常的静止状态。
First close the plug of a vacuum or pressure meter, if so mounted on the pump, connected to the pump before starting the motor and then open it when the motor move in the normal speed;
如果泵上装有真空表或压力表,要关闭其与泵相连接的旋塞再启动电动机,待转速正常后再打开;
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