经统计学分析表明：秋梢叶片各常量元素含量均呈显著的消长关系；
Statistical analysis showed significant differences from November to March in the amounts of N, P, K, Ca and Mg in the leaves.
探明了各常量及微量元素含量对抛光铝材反射率的影响。
The effects of constant and trace elements on the reflection rate of finished aluminium plates were discussed.
常量矿物质元素含量是影响牧草质量的重要因素之一，本文对内蒙古阿拉善额济纳荒漠区60种牧草进行了这方面的分析研究。
Macro mineral elements content is one of the important factors effecting the herbage quality, 60species of herbage in Alashan desert district in Inner Mongolia were studied in this aspect.
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