1. tetrabasic zinc chromate...
   四盐基铬酸锌,
2. Lead sulfate, tetrabasic;lead oxide sulfate;
   氧化铅与硫酸铅的复合物;
3. Using analytical method of pyrolysis gas chromatography/mass spectrometry, the temperature effect on pyrolyzate was studied, and the pyrolysis rule of tetrabasic copolymer was discussed.
   用热裂解色谱质谱分析方法,研究了裂解温度对裂解产物的影响,并讨论了四元共聚物的热裂解规律。

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