Warning: file_put_contents(/www/wwwroot/zidian/diubi.cn/cache/7194eac7a6d25a2db21da556e983bdad.txt): failed to open stream: No space left on device in /www/wwwroot/zidian/diubi.cn/index.php on line 59 bearing sleeve cover例句_bearing sleeve cover英汉例句_bearing sleeve cover双解例句_果味酸柯林斯词典
The main parts of pump are pump casing, pump cover, impeller, shaft, sealing ring, shaft sleeve, bearing and shaft seal etc. 泵主要由泵躰、泵蓋、葉輪、軸、密封環、軸套、軸承、軸封等零件組成。 cstegzb.web.3150vip.cn