Warning: file_put_contents(/www/wwwroot/ppbbu/laei.cn/cache/025100b03e70f46ab1f4b72a3fa5a693.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/laei.cn/index.php on line 58 ejector valve例句_ejector valve英汉例句_ejector valve双解例句_按摩法牛津词典
The working process for cold extruding of valve-spring base has been described, with a new die structure using ejector turning of itself. 介紹了氣門彈簧座的冷擠壓工藝和新型模具結搆。