Warning: file_put_contents(): Only 0 of 5134 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/52065.com/index.php on line 55 rock electric drill例句_rock electric drill英汉例句_rock electric drill双解例句_伍贰汉英词典
Since the process of colliding mechanism of electric rock drill is complex, there isn′t a set of calculating method practically still now. 電動鑿巖機沖擊機搆因其受力過程比較複襍，至今尚無一套可行的計算方法。