triguaiacyl ; three base ; three basic skills
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通过实验，提高了学生的“三基”能力。
The students' abilities were improved by the experiment.
youdao
用差示扫描量热计（DSC）研究了单基、双基和三基药热分解性能。
The thermal decomposition of single, double-and triple-base nitroguanidine propellants was studied by differential scanning calorimetry (DSC).
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