A new system for structural search based on a high selectivity topological index EAID is proposed.
描述以高选择性拓扑指数EAID为基础构建的结构检索系统。
It's a high selectivity, high sensitivity, high stability way that use photo acoustic method to detect trace gas concentrations.
光声法检测痕迹气体浓度，是一种具有高选择性，高灵敏度，高稳定性的气体检测方法。
The present invention relates to a high selectivity, high activing new type solid acid catalyst for esterification and its preparation method.
本发明为一种酯化反应用高选择性、高活性新型固体酸催化剂及其制备方法。
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