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jianchenyang
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樓主  發(fā)表于: 2014-07-24 21:29
如題 公司變頻器上有個(gè)0-50v變0-20mA的變送器 不知道去哪啦 想問(wèn)問(wèn) 哪里能用到這樣的啊
calvinbbq
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1樓  發(fā)表于: 2014-07-26 13:35
很多傳感器就是啊

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