Warning: file_put_contents(/www/wwwroot/ppbbu/cp667.com/cache/a3213d5ed3988694bbcb403007e3ec24.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/cp667.com/index.php on line 55 mean diameter of a ball例句_mean diameter of a ball英汉例句_mean diameter of a ball双解例句_淳朴汉英词典
Self-aligning ball bearings of the mean diameter range are also available with seals (Figure 1.6) and a for-life grease fill. 平均直径变动的调心球承也可带密封（图1.6）和一个终身油脂填充。 blog.sina.com.cn