compositions是什么意思,compositions怎么读,
chemical composition化学成分;化学组成
mineral composition矿物组成,矿物成分
1.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。
2.All these diverse constituents are aggregated together to form chondritic meteorites, like Allende, that have chemical compositions much like that of the Sun.
所有这些不同的成分聚集形成像阿连德一样的球粒陨石,具有很类似于太阳的化学成分。
6.The prime feature of the evening was in order, now--original compositions by the young ladies.
现在,晚会的主要内容已经安排好了——年轻小姐们的原创乐曲。