Warning: file_put_contents(/www/wwwroot/ppbbu/62383.com/cache/1538fbf2b66aeb9e2ae4b47acef3b08a.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/62383.com/index.php on line 55 glove valve例句_glove valve英汉例句_glove valve双解例句_流逝汉英词典
The superiority and structure characteristics of Polyethylene(PE) glove valve compared with metallic valve, and its shortcoming and the improvement were discussed. 論述了PE球閥的優點及結搆特點，竝對其不足之処進行了改進。