stepped bore 中文意思是什麼
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He made tracks heavily, slowly, with a dumpy sort of a gait to the door, stepped heavily down the one step there was out of the shelter and bore due left
他拖著沉重的腳步，拙笨地慢慢走向門口，邁下馬車棚外只有一磴的臺階，朝左邊拐去。 -
Machining practice of anomaly stepped bore on machining center
不規則臺階孔在加工中心上的加工實踐
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