relay contact的用法和样例：
例句
- Relay contacts should be shielded from the coil to minimize induced noise from the relay power supply.
继电器触点和线圈之间应该屏蔽，以使继电器电源引起的感应噪声最小。 - Most switch mainframes can be triggered externally via the trigger input and can send an output trigger pulse when the relay contacts have settled.
大多数开关主机都可通过触发输入进行外部触发，并且在继电器触点稳定之后可输出一个触发脉冲。
