Warning: file_put_contents(/www/wwwroot/ppbbbu/n94.cn/cache/164c7b0f0bab22b5a956f5c5b0656ff0.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbbu/n94.cn/index.php on line 55 green sand core例句_green sand core英汉例句_green sand core双解例句_94生活常识网有道词典
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。