1·Waiting outside means wasting useful time.
在外面等就是浪费有用的时间。
2·The effects of the useful time and the distance between the light source and detected site on th...
同时也较为详细地讨论了有效时间的选择和光源与探测点间的距离对测量结果的影响。
3·Most people who want to get ahead spend useful time writing personal notes of gratitude, sympathy and congratulations.
大多数想获得成功的人都利用有用的时间来写表示感谢、慰问和祝贺的私人信函。
4·As with all dead things, holding onto it won't keep it alive or change the fact that it's useful time has come and gone.
死了的东西，坚持下去不会让它复活，或者改变它有用的时间已经来了并且过去了的事实。
5·The reliability of GM counter tubes should be described by useful time before failure life and failure rate during life.
GM计数管的可靠性应当以失效的工作时间-寿命，以及在寿命期间的失效率来表征。
6·If these are all examples of attempts to convert "down time" into useful time, take note of the way in which "down time" has been expanded.
如果这都是将“无用时间”转化为有用的例子，就得注意“无用时间”是怎么被扩展的。
7·Pattern of Success Most people who want to get ahead spend useful time writing personal notes of gratitude, sympathy and congratulations.
成功的模式大多数想获得成功的人都利用有用的时间来写表示感谢、慰问和祝贺的私人信函。
8·Then proposes three ways to enhance the security of 802.1X like adopt EAP-TLS, add status confirmation and set useful time for certification.
提出通过采用EAP-TLS 交互认证协议，增加状态确认和设置认证有效时间三种方法提高802.1X 认证的安全性。
9·Using the optical temperature control accessory, silica peak height signal was enhanced doubly, reducing atomization time, extending useful time of graphite tube.
利用光学温度控制器使测量硅的峰高信号增强一倍，试验了时间常数、载气流量、常用酸和盐对测硅灵敏度的影响；
10·The fluorine mixed gas prepared by this device, which may prolong the working hours of excimer-laser 2 to 3 times and prolong the average useful time of lens of laser 3 to 5 times.
按规程应用该装置配制的含氟混合气，可以使准分子激光器的有效工作时间延长2 ~ 3倍，激光器中镜面的使用寿命平均延长3 ~ 5倍。