Warning: file_put_contents(/www/wwwroot/zidian/oumou.cn/cache/41120830634fb24084f438fd7aaab051.txt): failed to open stream: No space left on device in /www/wwwroot/zidian/oumou.cn/index.php on line 58 constant failure rate period例句_constant failure rate period英汉例句_constant failure rate period双解例句_欧米惠必应词典
The motor on the spot is in operation in the random failure period and therefore its failure rate is approximately a constant. 现场使用的电机基本运行在偶然失效阶段，因而其失效率近似为一常数。