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!turn on反義詞是turn off,turn off中文意思是關掉,關閉拐彎,使轉變方向使失去興趣
Its main return circuit adopts thyristor contactless switch, so can turn off circuit quickly, precisely and reliably.該系列點焊機主迴路均採用晶閘管無觸點開關,電路關斷時間快、準確、可靠。
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