daughter radiosotope

Clearly abnormity can be obtained when using the radon and its daughters survey in prospecting for sandstone-type uranium deposits.

氡及其子体测量用于寻找砂岩型铀矿床上能够形成清晰的异常,但氡及其子体测量方法较多且各具有不同的特点。

SSH of Porphyra haitanensis for analyzing the expression profile differences between sporophyte and gametophyte;

坛紫菜孢子体和配子体世代之间的SSH分析

Combination of non-thermal plasma and heterogeneous catalysis for removal of low concentration benzene hydrocarbons in air;

非热等离子体与催化相结合去除气相低浓度苯系物

Extraction and separation of intermediates in plasma degradation of benzene;

苯等离子体降解中间产物的萃取与分离

Effects of energy injection on removal of benzene hydrocarbons in the air by discharge plasma;

能量注入对放电等离子体去除气相苯系物的影响

A novel MgCl_2-supported Ziegler-Natta catalyst using poly(propylene glycol)dibenzoate (PPGDB) as the internal electron donor for propylene polymerization was prepared.

采用聚丙二醇二苯甲酸酯(PPGDB)为内给电子体制备了一种新的丙烯聚合催化剂MgCl2/PPGDB/TiCl4。

Propylene polymerization was studied with TiCl4/MgCl2/1,3-diol dibenzoate(LLX)/diisobutyl phthalate(DBP) as catalyst,in which LLX/DBP was used as internal electron donor compounds.

对TiCl4/MgCl2/1,3-二醇酯(LLX)/邻苯二甲酸酯(DBP)复配内给电子体催化剂的丙烯聚合行为进行了研究。

This paper summarized research and development status of Ziegler-Natta catalyst for polymerization of ethylene and propylene,and focusing on the progress of propylene polymerization catalyst with a new diether compounds as internal electron donor.

综述了ziegleer-Natta催化剂在乙烯聚合和丙烯聚合方面的研究开发现状,重点介绍了采用新型二醚化合物作为内给电子体的丙烯聚合催化剂的进展。

Based on the analysis of current woman shape classification standards abroad and the indicators applied in domestic woman shape classification,this paper proposes some measures for the purpose of improving the classification of woman shape in China.

文章分析了国外现行的几种女子体型分类的标准及我国处于研究阶段的几种女子体型分类指标,提出我国女子体型分类的改进措施。