Warning: file_put_contents(/www/wwwroot/ppbbu/www.30232.com/cache/8c81ce24a3f82b8a492f1fe672ac2993.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/www.30232.com/index.php on line 55 green sand core例句_green sand core英汉例句_green sand core双解例句_绍翊字体网有道词典
Green-sand is easy to prepare by mixing and needs no treatments after formation. It can be poured immediately after core setting. 湿型砂混制简单，成型后不需要任何处理，下芯后可浇注。