离子结构

Furthermore, the effects of ligands, metal and reaction time on the reaction were also researched, and the process of new ligand-metal catalysis for Diels-Alder reaction was also analyzed according to Evans" square planar mode and Corey"s tetrahedral manner.

我们对影响配体对映选择性能的各种因素，如配体结构、金属离子、反应时间等进行了研究，而且根据Evans的平面四方形模式与Corey的四面体过渡态理论为新配体—金属配合物催化的该反应提出了可能的反应机理，并对产物的优势构型作了理论分析。

The mechanism of the second kind of FRs, FRs , can be described as"Accelerating the Elimination of HCl and Crosslinking by Ion Model". FRs can obviously promote the elimination of HCl, decrease the on-set temperature of decomposition of PVC, it can promote the crosslinking during decomposition, reduce the total output of aromatic compounds, increase the gel of condensed phase and char residue, the char residue is loosened.

第二类阻燃抑烟剂对PVC的阻燃抑烟机理可用&快速脱氯化氢离子交联模型&描述，其主要特点为：阻燃抑烟剂在热分解过程中，转化成为MCl〓，它一方面促进PVC释放HCl，另一方面，促使体系产生分子间交联，使裂解气相产物中芳烃化合物含量减少，凝聚相凝胶含量变大，残炭量提高，残炭物结构呈松散状态。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。