normal variations翻译

normal variations的基本解释

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标准变化

例句

The ability of the ionosphere to reflect these waves is dependent upon normal variations in the electron density at different levels.电离层反射电波的能力取决于不同高度上电子密度的正常差别。
There were some normal nasal structures which were susceptible to be confused with fracture, such as bone suture, internasal aperture, intersuture bone, and normal variations.易与骨折混淆的鼻区正常结构有鼻骨缝、鼻骨孔、缝间骨及鼻骨正常变异。
The theoretical analysis of normal variations of the 8 and P amplitude relation is given. The possibility and limitation for the use of the amplitude relation in earthquake prediction are discussed.本文对波振幅比的正常变化作了理论分析，讨论了利用波振幅比变化预报地震的可能性及其应用范围。

短语

color variations are normal 本品含有天然成分
normal growth variations 正常发育变异
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