It is showed that the thermal stability of an can be lowered by adding a small quantity of wood powder.
结果表明：AN中加入少量的木粉使热安定性显著降低。
The collectorless electrochemistry flotation of commensal sulphur minerals is realized by adding a small quantity of electrochemical regulators.
仅通过添加少量电化学调整剂实现了硫化共生矿石的无捕收剂电化学浮选。
Through amending experimental scheme, using the coordinated effect of surfactant, adding a small quantity of positive ion surfactant, the separated efficiency was rapid improved.
通过改进实验方案，利用表面活性剂的协同效应，用加入少量阳离子表面活性剂的办法，大大提高了分离效率。
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