contact: n.1.接触；联系；交涉。2.〔美国〕(有势力的)熟人；门路。3.【数学】相切；【电学】接触；触头；触点；【无线电】通讯；【军事】(飞机和地上部队的)联络。4.曾与传染病接触者；【医学】传染病带菌嫌疑人。短语和例子a man of many contacts 交际广[门路多]的人。 an auxiliary contact联锁触头。 first contact【天文学】初亏
Alarm systems - intrusion systems - requirements for opening contacts magnetic 报警系统.入侵系统.断路触点
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Normally open contacts 正常开路触点
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Normally open contact 常开接点
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Alarm systems - intrusion systems - part 2 - 6 : requirements for opening contacts magnetic ; german version clc ts 50131 - 2 - 6 : 2004 警报系统.入侵报警系统.第2 - 6部分:断路触点
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An isolated relay can have more than one pole and can have normally closed contacts as well as normally open contacts 隔离继电器可以有多个铡刀，可以有常闭触点，也可以有常开触点。
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Button with 2 usually - open contacts and auto - resetting . suitable for high - voltage engine control circuit or function pancel a 功能为2带常开触的按钮，自动复位，适合于高压电机控制电路。或采用a功能面板。
