... quaternary ammonium compound 季铵化合物 quaternary base 季碱 quaternary carbon atom 季碳原子 ...
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quaternary base resin 季铵碱型树脂
quaternary ammonium base [有化] 季铵碱
quaternary ammonium base cellulose 化学纯纤维素
Mannich base quaternary ammonium salt 曼尼希碱季铵盐
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Plant area was distributed over Quaternary system alluvium and deposit of oxbow lake facies, base rock is Tertiary red rock.
厂区分布第四系冲积物及牛轭湖相沉积层，基岩为第三系红层。
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