Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/816047fbb9df0455ef1bd67d1e9cc1c7.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 subsurface leakage例句_subsurface leakage英汉例句_subsurface leakage双解例句_沉淀汉英词典
The selection of the clearance of a subsurface pump and the analysis of the leakage between plunger and barrel are of great importance by artificial lifting. 抽油泵泵隙的选择和漏失量分析是机械采油中的重要问题。