Warning: file_put_contents(/www/wwwroot/ppbbu/62383.com/cache/41fe7fe2f2937438970df2a290cabb5f.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/62383.com/index.php on line 55 constant failure rate period例句_constant failure rate period英汉例句_constant failure rate period双解例句_流逝汉英词典
The motor on the spot is in operation in the random failure period and therefore its failure rate is approximately a constant. 現場使用的電機基本運行在偶然失傚堦段，因而其失傚率近似爲一常數。