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本帖最后由 移民电工 于 2012-3-9 16:59 编辑
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driver has forward force, wrench has rotation
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8 j; Z" E, [% V7 OThe difference is that impact wrenches do not provide the positive engagement that impact drivers offer as mentioned above. Otherwise impact drivers and impact wrenches operate in essentially the same fashion.
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* G' w7 o7 {6 w7 }0 g" Wso if use wrench you have to force it to work, not like drive |
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