Warning: file_put_contents(/www/wwwroot/zidian/diubi.cn/cache/945eda191577c62ac3dc3618ad118029.txt): failed to open stream: No space left on device in /www/wwwroot/zidian/diubi.cn/index.php on line 59 boiler graphite例句_boiler graphite英汉例句_boiler graphite双解例句_果味酸柯林斯词典
Two kinds of packing: i. e. carbon with fiber and soft graphite are used. The sealing effect is excellent for high pressure boiler F. W. P. 选用碳素纤维填料和膨胀石墨填料混合使用，密封效果良好。