Normally, test cases have a certain amount of set up work.
通常，测试用例需要执行一定数量的设置工作。
During the test of work: data validity, large amount of data reading efficiency.
测试期间所做到的工作：数据的有效性，大数据量的读取效率。
The test and its calculation in the paper needs less amount of work preparation, lower requirements about instruments and meters, besides, its calculation process is very simple.
文中介绍的测试及计算方法准备工作量小，对仪器仪表的要求不高，计算过程简单。
It is revealed by a great amount of test and research work that there is a significant effect of atmospheric temperature and atmospheric pressure on Diesel engine smoke emission.
通过大量的试验研究，发现大气温度和大气压力对柴油机烟度排放有很大的影响。
It is revealed by a great amount of test and research work that there is a significant effect of atmospheric temperature and atmospheric pressure on Diesel engine smoke emission.
通过大量的试验研究，发现大气温度和大气压力对柴油机烟度排放有很大的影响。
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