这令人印象深刻的无故障盆景是一个初学者的优良树种。

This impressive trouble-free Bonsai is an excellent tree for the beginner.

所有升降机进行彻底检查和测试之前，装运，以确保安全和无故障运行。

All lifts are thoroughly inspected and tested prior to shipment to ensure safe and trouble-free operation.

考虑随机截尾试验中有些试验产品无故障数据出现，提出采用平均秩次法计算经验分布函数。

Because some products show no failure in the random truncation test period, this paper USES the mean rank order method to calculate the empirical cumulative distribution function.

结合故障实例进行分析，针对无故障码显示的线路断路和接触不良故障，提出了检测方法和维修方法。

Analyzing through the trouble example, and put forward the method of inspection and maintenance according to the trouble of broken circuit and improper contact of circuit of no-trouble code display.