樓主: 是開(kāi)
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這種圖紙?jiān)趺纯蠢^電器是常閉還是常開(kāi)呀? |
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點(diǎn)評(píng)
說(shuō)實(shí)在的,這完全不是電氣工程師的事;繼電線路設(shè)計(jì)也是機(jī)械工程師必備技能。
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