Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/7bab521ebcbab950c26bdb73bf7f8720.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 safe overhead clearance例句_safe overhead clearance英汉例句_safe overhead clearance双解例句_沉淀汉英词典
The electric clearance check of tower head is an important measure to ensure the safe operation of overhead transmission line. 塔头电气间隙校核是保证架空输电线路安全运行的重要措施。