Just as in a laboratory, to obtain consistent results, the test must hold the variables to a minimum and use a set procedure.
正如在实验室里，为获得一致的结果，测试必须控制变量到最低范围同时使用一套设定的程序。
Just as in a laboratory, to obtain consistent results, the test must hold the variables to a minimum and use a set procedure.
正如在实验室里，为获得一致的结果，测试必须控制变量到最低范围同时使用一套设定的程序。
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