闭: Ⅰ动词1.(关; 合) close; shut 短语和例子关闭 close; 停闭 close out; 封闭 seal off; close; 闭嘴! shut up!; hold your tongue!2.(堵塞不通) block up; obstruct; stop up 短语和例子闭住气 hold one's breath; stop breathingⅡ名词(姓
常闭: normal close◇常闭触点 normally closed contact; 常闭阀 normally closed valve; 常闭控制元件 normally closed control element; 常闭选通电路 normal closed gate; 常闭状态 normally off
触: Ⅰ动词1.(接触) touch; contact 短语和例子游客请勿触摸陈列品。 visitors are requested not to touch the exhibits.2.(碰; 撞) strike; hit 短语和例子触雷 strike [touch off] a mine; 船触礁了。 the ship struck a rock.3.(触动) touch
Example Sentences:
1.
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。
