Warning: file_put_contents(): Only 0 of 5530 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/73904.com/index.php on line 55 safe overhead clearance是什么意思，safe overhead clearance的翻译，safe overhead clearance音标、读音、用法和例句_骑士汉英词典
The electric clearance check of tower head is an important measure to ensure the safe operation of overhead transmission line. 塔頭電氣間隙校核是保証架空輸電線路安全運行的重要措施。