名词
中文翻译：通常关闭的接触点
同义词：
['Normally Closed Contact', 'Normally Open Contact例句：1. This device has a normally closed contact that prevents the circuit from being interrupted during operation.（这个设备有一个通常关闭的接触点，以防止在操作期间电路被中断。）']
例句：
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1. This device has a normally closed contact that prevents the circuit from being interrupted during operation.
这个设备有一个通常关闭的接触点，以防止在操作期间电路被中断。
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2.The normally closed contact is used to ensure that the motor operates only when power is applied.
通常关闭的接触点用于确保电机仅在施加电源时运行。
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3. In this circuit, the normally closed contact ensures that the current flows only when the switch is closed.
在这个电路中，通常关闭的接触点确保电流只在开关闭合时流动。