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tjdsllq
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樓主  發(fā)表于: 2008-03-13 09:06
電動(dòng)閥是不是都有3根線(xiàn)（電纜線(xiàn)），電源線(xiàn)+控制信號輸入線(xiàn)+閥位反饋信號線(xiàn) ？
還是有的電動(dòng)閥只有2根線(xiàn)？
baoshizhi
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1樓  發(fā)表于: 2008-03-13 10:00
看是什么型號的電動(dòng)閥，哪都一樣。

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