The process of direct preparation of microcapsules by in situ polymerization of urea-formaldehyde was analyzed.
分析了一步法中脲醛树脂微胶囊的形成过程。
A novel technology on direct preparation of nanometer chiolite from expired phosphoric acid-based polishing agent is investigated.
研究由失效磷酸基抛光液直接制备纳米锥冰晶石新工艺。
The improvement of the main problems arising in the course of direct preparation of villus cell chromosomes has been illustrated, and the relative problems have been discussed.
对绒毛细胞直接制备染色体过程中存在的一些主要问题，在技术上进行了改进，并就有关问题加以讨论。
Direct preparation of grade zinc oxide from zinc oxide ores or zinc bearing materials by using ammonium sulfate and ammonia leaching process has been described.
介绍了硫酸铵氨络合浸出法直接由矿物原料制取等级氧化锌新工艺。
Direct preparation of grade zinc oxide from zinc oxide ores or zinc bearing materials by using ammonium sulfate and ammonia leaching process has been described.
介绍了硫酸铵氨络合浸出法直接由矿物原料制取等级氧化锌新工艺。
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