Through the contrast test,the author discovered that no obvious difference could be found in determining COD by using both methods of instrumental detection and dichromate process.
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Through the contrast test, the seepage coefficient from this method has the very good relevance to the conventional pumping test.
通过对比试验，该方法所测得渗透系数与常规抽水试验渗透系数数值有很好的相关性。
Through the contrast test with graphite electrode, the degradation mechanism and technic of neutral bordeaux using this electrode was further studied.
通过与普通石墨电极的对比实验，进一步探讨了该电极降解中性枣红染料的机制和工艺条件。
Through the contrast test, the author discovered that no obvious difference could be found in determining COD by using both methods of instrumental detection and dichromate process.
通过对比测试，结果发现使用自动检测仪器方法与使用重铬酸盐法测定不同水样的COD值时，两者没有显著性差异。
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