sodium layer 中文意思是什麼
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This paper illustrates the reaction of larch bark tannin extracts with sulfite and sodium hydroxide and the tests of its solution viscosity, mw - distribution and thin - layer chromatography
摘要通過對落葉松栲膠進行亞硫酸鹽和氫氧化鈉的改性,則定其溶液黏度,用不同溶劑進行分級和薄層色譜。 -
Mercury has a thin layer of atmosphere, which is mainly made up of sodium and a little helium
水星有一層由鈉和氦組成的極稀薄大氣,表面大氣壓力幾近於零。
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