Database Shared memory: This refers to the database global memory, which is allocated when the database is activated or connected to for the first time.
数据库共享内存：这是数据库全局内存，是在激活数据库或者第一次连接到数据库时分配的。
Database Shared memory is allocated when a database is activated or connected to for the first time.
数据库共享内存是在数据库被激活或者第一次被连接上的时候分配的。
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；
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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