Atom transfer radical polymerization (ATRP), which can yield polymers with controlled molecular weight and low polydispersity, is an effective approach to realize living radical polymerization.
原子转移自由基聚合(ATRP)反应是实现活性聚合的一种颇为有效的途径，可以合成分子量可控、分子量分布窄的各种聚合物。
The results demonstrated that the zeolite could be effective for removing higher molecular weight (MW) organics but less effective at lower one.
结果表明：沸石能有效地去除大分子的有机物，对小分子有机物的去除效果很差。
Conclusion it is quite effective, convenient, safe, economical and commendatory to use aspirin and low molecular weight heparin in acute cerebral infarction therapy.
结论使用肠溶阿司匹林和低分子肝素钙联合治疗急性脑梗塞疗效好，使用简便、安全、经济，可在临床予推广应用。
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