方法：以苯乙烯为单体，二乙烯苯为交联剂，采用二步溶胀法合成单分散、大粒径的聚苯乙烯高分子微球。
Methods: Prepared the monodisperse and big diameter crosslinked polystyrene microspheres with Two Step Swelling Method, Using diVinylbenzene as the crosslink agent.
本文叙述用溶出法制备作为疏水化催化剂担体的多孔大粒ptfe树脂。
Macroparticle multihole PTFE which is made for a new hydrophobic catalyst supporter is prepared by dissolving the reagent for hole.
大粒径、低堆密度催化剂易膨胀；
The catalyst with big size and low bulk density is prone to expand.
文章通过对沉淀剂、沉淀方法等的研究，探索了实验室制备较大粒径稀土复合氧化物的优化条件。
We explored the optimal way to prepare the large grain of rare-earth composite oxide, though the selection of best precipitator, best way to deposition etc.
文章通过对沉淀剂、沉淀方法等的研究，探索了实验室制备较大粒径稀土复合氧化物的优化条件。
We explored the optimal way to prepare the large grain of rare-earth composite oxide, though the selection of best precipitator, best way to deposition etc.
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