The BHT in chewing gum was treated with ethyl acetate, then analyzed by high performance liquid chromatography with methanol as mobile phase.
采用乙酸乙酯处理样品，甲醇作流动相，测定了口香糖中抗氧化剂BHT含量。
Liquid rosin resin is made from the gum rosin through esterification with polylol.
液体松香脂由松香与多元醇酯化而成。
The liquid crystal layer is positioned between the first substrate and the second substrate, wherein the gap and the liquid crystal layer are wound by the frame gum.
液晶层则位于 第一基板与第二基板之间，其中间隙物与液晶层被框胶所环绕。
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