The oxidation mechanism of the alloy has also been suggested by the phase composition analyses of oxide film.

根据氧化膜的组成分析了合金的氧化机制。

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The results of composition analyses show that Ningcun china stone is mainly composed of quartz, sericite and feldspar; iron is contained in silicate, sulphide, oxide and hydroxide minerals.

结果表明：宁村瓷石主要由长英质矿物组成，铁元素主要以硅酸盐矿物，硫化物和氧化物及氢氧化物等形式存在；

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To find out why, researchers used sophisticated X-ray analyses to determine the exact chemical composition of the paint as it browns.

为找出原因，研究人员用精密X射线分析仪测定了变成褐色颜料的精确化学成分。

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High-tech lab analyses revealed panguite's chemical composition and crystal structure, which Ma said is new, and as such, could be explored for novel engineering materials.

MSN: 1969 fireball meteorite reveals new ancient mineral

In addition to a sea floor mapping project, the researchers will make chemical analyses of water samples that will help them determine the temperature, salinity and composition of a strong circumpolar current that flows around the boundary of the Arctic Ocean.

CNN: Nuclear sub dives under the ice to explore climate change