以细铁丝保护;
This article selects 2473 experimental data of coal gange light aggregate concrete cubic strength on the spot in Fuxin, calculates their average value, mean& square deviation and coefficient of variation, and makes regression analysis.
本文收集了阜新市煤矸石轻骨料混凝土立方强度的现场试验数据2473个,统计了它们的平均值、均方差和变异系数,并进行了回归分析。
Using small radius electronic gange new technology, we successfully operate interference test in Zhao 41 region.
对晋县凹陷41断块油田采用小直径电子压力计试井新技术, 成功地进行了干扰试井.
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