reversing switch contact的用法和样例：
例句
- However, when the switch is opened, a large inductive reaction voltage will appear across the switch contacts and may damage the contacts.
然而，当开关被开路时，在开关触点上会产生一个大的感应电压，并可损坏触点。 - Force needed to add to the executer unit to make the switch conact back to normal position.
使开关触点回复到正常位置，所必需减少施加于操动器上的力。
