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baolizcy
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12樓  發(fā)表于: 2011-11-16 11:24
程序這樣做不佳
zh323
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13樓  發(fā)表于: 2011-11-17 08:24
學(xué)習，學(xué)習
gumeng
學(xué)無(wú)止境
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14樓  發(fā)表于: 2011-11-17 09:22
選擇脈沖加方向，通過(guò)改變脈沖極性來(lái)改變方向，也可以選擇脈沖型，然后驅動(dòng)方向控制端子。
現承接各類(lèi)電氣自動(dòng)化設備的設計，改造及維修。
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