even-diameter hole 中文意思是什麼
even-diameter hole
解釋
等徑鉆孔-
The diamerter is even distributed and is much smaller than that of the holes. maybe there are several nanotubes grown from one hole. for two - step oxidation films, the diameter of the prepared nanotubes is the same as that of the holes
一次氧化的模板制備了直徑均勻的竹節狀碳納米管,但直徑徑遠遠小於模板孔的直徑,因此一個孔內可能長出數根碳管。 -
The seams of the internal threads are eliminated by the reverse rotation while producing few chips , and uniform threads diameter is achieved even though the hole diameter is uneven
正轉時擠壓出內螺紋,逆轉時切去內徑部的縫隙(有微量碎屑排出) ,從而完成加工。下孔徑尺寸即使零亂,也可以做出內徑尺寸均一的螺紋。
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