Differences in the concentration of trace elements are related to the climatic conditions and land use of the area.

不同地区地下水的微量元素浓度差异与气候状况、土地利用程度密切相关。

youdao

The crust elements had the highest concentration when all kinds of sand weather happened.

各种沙尘天气发生时，均以亲地元素的浓度为最高。

youdao

The fundamental parameter method of X-ray fluorescence analysis has many advantages, such as no concentration range limitation of elements, dispensability of standard samples and so on.

本文叙述了利用基本参数法校正源激发合金元素荧光分析的基体效应的基本原理、基体效应的修正方法。

youdao

Instead they sprayed three elements right across the wafer, but varied the concentration of each element from one side to the other so that it contained every possible combination of them.

ECONOMIST: Combinatorial chemistry