Methane is a colorless, odorless and flammable substance which forms a major component in natural gas.
甲烷是一种无色,无味,易燃物质,是天然气的重要组成部分。
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Borax also called coarse borax, is a kind of both soft and light colorless crystalline substance.
硼砂也叫粗硼砂,是一种既软又轻的无色结晶物质。
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Industrial application: soluble in water, aqueous alkali, ammonia and cellulose solution, colorless and insoluble in organic solution, mineral oil amorphous substance.