触点
2.Of a selector, a moving contact that engages with the contacts of a bank.
3.An electrical contact, especially one in the distributor of an automobile engine
6."They also may include a cam-angle meter to measure dwell, or cam, angle. In addition, they usually have a vacuum device to test the operation of vacuum-advance mechanisms."
7.The balls should sit properly and are loosely adhered to the pads after this process.
8.The mercury wicks up the reed and wets the contacts,providing a perpetually self-renewing contact surface.
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10.An unwanted making and breaking of the connection while opening or closing a contact

