radial extent 中文意思是什麼
radial extent
解釋
徑向伸長-
According to achievements in research, using face - radial sealing structures can adapt to the developing trend of increasing rotary speed of cone bit to a certain extent in lubricating system of bearing seal, which is cramp to bit service life
本文的研究表明,在偉l ]約鉆頭壽命的軸承密封潤滑系統中,採用端面一徑向組合密封結構能夠在一定程度上適應牙輪鉆頭轉速提高的發展趨
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