24V DC control voltages,grounded (earthed) and ground free.grounded (earthed)是不是指24V- ground free指24V+
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24VDCcontrolvoltages,grounded(earthed)andgroundfree.grounded(earthed)是不是指24V-groundfree指24V+24VDCcon
24V DC control voltages,grounded (earthed) and ground free.grounded (earthed)是不是指24V- ground free指24V+
24V DC control voltages,grounded (earthed) and ground free.
grounded (earthed)是不是指24V-
ground free指24V+
24V DC control voltages,grounded (earthed) and ground free.grounded (earthed)是不是指24V- ground free指24V+
grounded是接地吧
窃以为,接地的话不是电势为0了吗?
24V DC control voltages,grounded (earthed) and ground free.grounded (earthed)是不是指24V- ground free指24V+
求教英语24V DC control voltages,DC control voltages, grounded (earthed) and ground free. grounded (earthed)是不是指24V- ground free指24V+直流控制24V怎么还分接地和不接地的呢 哪个是24V-吗另外24V+怎么说
英语翻译DC control voltages,grounded (earthed) and ground free.grounded (earthed)是不是指24V-ground free指24V+24V正 在工程上英语怎么说 是ground free？
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