To compare the compositions of a meteorite and the Sun, it is necessary that we use ratios of elements rather than simply the abundances of atoms.
为了比较陨石和太阳的成分，我们需要利用元素的比率，而不单单是原子的丰度。
In this dissertation, the title compounds were synthesized at 825c by stoichiometric ratios of elements.
在本论文中，所有化合物都是以该比例的元素态反应物在825c的温度下合成。
Atoms of different elements combine in simple whole number ratios to form compounds.
不同元素的原子，以简单的整数比化合成化合物。
Cosmochemistry is the study of the chemicals found within the Solar System, including the origins of the elements and variations in the isotope ratios.
宇宙化学是研究发现的化学品的太阳能系统，包括起源的要素和不同的同位素比值。
The multiplicative ratios of leading elements and trailing elements were used to formulate the criteria for evaluating denudation level of the deposit.
利用矿床前缘元素和尾部元素的累乘比值，确定了矿床的剥蚀程度评价指标。
With the ratios of design thickness to initial thickness of membrane elements as design variables, design variables linking is implemented by dimensionless design variables.
以膜单元的设计厚度与初始厚度的比值为设计变量，通过设计变量的量纲一化实现了设计变量的连接。
The ratios of incompatible elements reflected that the magma source departed from the composition of primary mantle and had the characteristics of the enriched metasomatic mantle.
强不相容元素比值反映岩浆源区明显偏离原始地幔组分，具有富集型异常地幔岩浆源区特征。
Ideal partitioning-ratios and-parameters of substitutional elements in two-phase alloys with FCC, BCC and HCP structures are derived in terms of atomic fraction and lattice cell number.
从原子分数及晶胞原子数的角度导出FCC,BCC及HCP结构两相合金中元素分配比和分配系数。
According to the surface chemical composition change of the steady state, the surface binding energy ratios between any two elements in the target can be evaluated.
根据稳定态时化学成分的改变，可以推算出靶中任意两元素表面结合能之比。
The ratios of absorption and return of biology are usually lower in mangrove forests than those of other forestS, but biological decompositional ratios for most of elements are reverse.
红树林的生物吸收率和生物归还率通常也较低，但其大多数元素的生物分解率则较高。
Regions of the galaxy that are rich in heavy elements generally, such as the galactic center, have higher carbon-to-oxygen ratios.
在宇宙里一些含有大量重元素的地区如银河系中心里，一般都有较高的碳氧比例。
Regions of the galaxy that are rich in heavy elements generally, such as the galactic center, have higher carbon-to-oxygen ratios.
在宇宙里一些含有大量重元素的地区如银河系中心里，一般都有较高的碳氧比例。
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