space distribution and variation 空间分异
spatial distribution and variation 空间分布与变化
distribution and variation characteristics 分布变化特征
spatial distribution and variation pattern 空间分异规律
Spatial distribution and diurnal variation 空间分布和日变化
variation and distribution 变异与分布
variation and distribution laws 变化及分布规律
spatial and temporal distribution variation 时空分布变化
river bed variation and distribution 河床冲淤及其分布
The major differences of the two systems are: phonetic distribution and variation of sounds.
两个语音系统的主要区别之处有：一、语音分布，二、语音变化。
Studied the soil fertility on south slope in Qinling Mountains, the spatial distribution and variation pattern and its relation with altitude.
对秦岭南坡土壤肥力状况、空间分异规律及其与海拔的关系进行研究。
The distribution and variation of sand amount (A) , absolute and relative, at the height layer of 0-10 cm are qualitatively and quantitatively analysed.
本文对0—10厘米垂直高度层内沙量（包括绝对和相对）的分布及变化，进行了定性和定量分析。
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