chemical make-up 化学成分
chemical make up 补充药品
chemical make-up water 化学补给水
make-up of chemical loss 化学药品补充量
The beetle larvae have a distinct chemical make-up, which can be traced through the feathers and blood of birds that eat them.
甲虫幼虫含有独特的化学成分，从猎食它们的鸟类的羽毛和血液中可以找到这种成分的痕迹。
Ocean scientists study the chemical make-up of the ocean, weather patterns, the geography of the ocean floor, and many other areas.
海洋科学家研究海洋的化学成分、气候模式、海底地貌以及许多其他领域。
The actual chemical make-up of rocks is complex, so the conventions of petrological analysis pretend that these metals are present in basalt as their oxides.
然而构成这种岩石的化学元素十分的复杂，因此根据常规的岩石分析得出出现在玄武岩里的金属都是其氧化产物。
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