聚苯乙烯泡沫塑料是一种加工塑料，主要由被称作苯基团的碳环和氢环构成，苯基团连接到能降解成更小苯乙烯单元的长链碳氢化合物上。
Polystyrene foam is a manufactured plastic primarily made up of rings of carbon and hydrogen, called phenyl groups, attached to long hydrocarbon chains that can break into smaller styrene units.
矿物油是一种混合物，由长短不一的碳链和几个碳氢化合物混合而成。
The mineral oils are a mix of several hydrocarbons with different length of carbon chain.
本文研究了不同糖脂化合物修饰的脂肪酶在有机溶剂中催化长碳链脂肪酸和脂肪醇的酯化反应。
The esterification reaction of a long chain fatty acid and a fatty alcohol catalyzed by sugar ester modified lipases in organic media was studied.
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