Warning: file_put_contents(/www/wwwroot/zidian/oumou.cn/cache/93793eed083aa39bcd9e047ea3680946.txt): failed to open stream: No space left on device in /www/wwwroot/zidian/oumou.cn/index.php on line 58 gallow例句_gallow英汉例句_gallow双解例句_歐米惠必应词典
The main safety valve shall be fastened upon the gallow, . Which sustains the counterforce produced in the steam discharging process of the main safety valve . 主安全閥緊固在支座上，支座承受主安全閥排汽時産生的反作用力。 www.tianzheng-valve.com