Warning: file_put_contents(/www/wwwroot/ppbbbu/202081.com/cache/0969504ef7c5349b71549f271d60ced3.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbbu/202081.com/index.php on line 55 enveloping ring例句_enveloping ring英汉例句_enveloping ring双解例句_2020年的事情英文词典
The optimum design of plane quadratic enveloping ring surface worm drive has been realized using the theory and method of optimization. 針對平麪二次包絡環麪蝸杆傳動，運用優化理論和方法，對其進行了優化設計。