用新颖的干粉方法合成系列沸石的研究已从五元环沸石延伸到具有四元环和六元环的方钠石。
The family of zeolites that can be synthesized by the new dry powder method was extended from pentasil zeolites to sodalite having the structure composed of 4- and 6-member rings.
由邻位化合物生成的五元环络合物比由间位化合物形成的六元环络合物稳定性高，反应速度快。
The ortho-compound formed penta cyclic compound was more stable that the meta-compound formed hexa cyclic compound, so the reaction rate of the ortho-compound is larger.
求得可能的四种不同热解反应通道的过渡态、活化能和位能曲线，发现其热解引发步骤为五元环上侧链n—NO2键的均裂。
All transition states, activation energies and potential curves of four possible reaction paths were obtained. It was found that the homolysis of n-no2 bond in five-membered ring is the initial step.
具有带酯键的侧链的五元环或六元环的环状醚化合物，其中所述环状醚化合物的含量，按每100质量份所述酯化合物，调整到0.01至5质量份。
The content of the cyclic ether compound is adjusted to 0.01 to 5 parts by mass based on 100 parts by mass of the ester compound.
交流会地址：北京石景山区晋元庄路5号（西五环晋元桥西北角）北方工业大学主校区内。
The address of the exchange: Beijing Shijingshan District Jinyuanzhuang Road, NO. 5(Northwest corner of the Jinyuan bridge at the west of fifth ring )in the main campus of NCUT.
综述了五元杂环类茂金属配合物的研究进展及其在烯烃聚合中的应用。
The progresses in five-membered heterocyclic metallocene analogic complexes and their application in olefin polymerization are reviewed.
综述了近年来各种五元氮杂环的开环反应及其在有机合成中的应用。
This article reviews the ring opening reaction of five membered nitrogen containing heterocyclic compounds.
在其他平台上也有环滩岛一日游，包含五星级码头和专属双体船快艇，赠送水下拍照的产品，不包含午餐，单人价格达到558元。
On other platforms also have a ring at the island tour, including five star ferry and exclusive catamaran boats, mini underwater camera products, not including lunch, a single price reached 558 yuan.
三尖杉碱具有五元稠环结构。
一种简单的含氮有机分子，具一个双环结构——六元嘧啶环融合成一个五元咪唑环。
Purine a simple nitrogenous organic molecule with a double-ring structure? A 6-membered pyrimidine ring fused to a 5-membered imidazole ring.
一种简单的含氮有机分子，具一个双环结构——六元嘧啶环融合成一个五元咪唑环。
Purine a simple nitrogenous organic molecule with a double-ring structure? A 6-membered pyrimidine ring fused to a 5-membered imidazole ring.
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