fixed connection造句

low-voltage fixed connection enclosed assemblies
低压固定封闭式成套开关设备
tightly fixing connection screw to machine and cabinet
机柜内所有连接螺钉均应牢固、无松动。
cable and bulb built a fixed connection
电缆和球壳有固定连接。
fix connections can be started, stopped and reset automatically by means of a flexible timetable which can take into account time zones and public holidays
可通过灵活的时间表设置自动开始结束和重置fix连接，还可将不同的时间区域和公众假期考虑在内。
It's difficult to find fixed connection in a sentence. 用fixed connection造句挺难的