Warning: file_put_contents(/www/wwwroot/zidian/biehu.cn/cache/85f0ef1addb3173011e0d8dd000d7208.txt): failed to open stream: No space left on device in /www/wwwroot/zidian/biehu.cn/index.php on line 58 fixed ball-valve例句_fixed ball-valve英汉例句_fixed ball-valve双解例句_甲百汇小鸡词典
The installation 1, Qudiao flange end of the Flange-connection fixed ball valve protective cover on both sides, in the valve fully open state to wash clean. 安装1、取掉法兰端两边的保护盖，在阀完全打开的状态下进行冲洗清洁。