Over the course of 200 hours of use on two test units, lumen output degraded by 25% on both of them.
有两台测试样机在使用了200小时后,都降低了25%的流明输出。
On one of our XJ-A130s, the max lumen output was 1228 when it was new. After 130 hours of use its maximum brightness dropped to 949 lumens, which is a 23% reduction.
我们手头的其中一台XJ-A130, 开箱时最大流明输出1228流明,但使用过130小时之后其最大流明输出降为949流明,降幅达23%。
Must make students who are time-slicing assignments from four or five courses more productive within one month of adoption (i.e., after five to ten hours of use spread over two weeks).
使用该软件,学生在一个月内通过完成四到五次作业(比如在两周内花费总共五到十个小时来使用该软件),能够变得更有效率。
When designing pavement structure, we want to use bituminous concrete to improve driving comfort and to consider volume of traffic and hours of use to confirm thickness of pavement.
路面结构设计时为增加行车舒适性采用沥青混凝土路面,考虑交通量和设计年限,确定合理的路面厚度。