【化】 操作试验

没有动负载阀帽的压力密封结构（没有弹簧垫圈）：在工作试验压力和温度达到限制值时，必须重新检查垫圈螺栓的紧固性。

Standard operating procedure，SOP

maximum operating voltage

motor-driven operating table

quiescent operating-point

operating instruction【管理】

operating activity【贸易】;business activity【贸易】

Peltier effect, Seebeck effect; operating with device, thermoelectric only

operating bolt load