试验表明：冰盖下泥沙起动流速与冰盖及槽底糙率的相对比值有关。
The experiment results show that the threshold velocity is affected by the ratio of roughness coefficient of ice cover and bed.
通过采取基于故障影响相对比值的样本分配方案， 可以使试验结果更加真实、可信。
The sample allocation scheme based on relative ratio of failure effect was adopted, which could make the test result more credible.
橡胶树不同年龄或不同光强下的叶片，其乙醇酸氧化酶活性与光合活性的相对比值亦不相同。
The relative ratios of glycollate oxidase activity to photosynthesis activity in leaves at different ages and under different light intensities were also different.
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