同重核

A new density operator formalism for describing thecoupled high-spin systems was proposed.The formula ofevolution of density operators under the effect of weakspin-spin coupling were derived.Some experiments wereanalyzed include refocused INEPT and homonuclear COSY(for2D nuclear).

五提出一种描述高自旋体系密度算符演化的新方法，推导了高自旋体系和自旋算符在弱偶合哈密顿作用下的演化公式，并以■核(2D)为例，计算了重聚INEPT和同核COSY实验谱。

The isobars distinguishing method is nearly independent of the ion energies. A wide variety of new research work can be carried out using this method.

这种同量异位素的鉴别方法与离子的能量基本无关，因而可以开展以前无法测量的一些较重核的研究工作。

The complexes were characterized by elemental analysis,UV,IR,TG,NMR and molar conductance measurements.Their formulas were in accordance with C34H32O8N2LnCl·nH2O or 〔(L4)2LnCl·nH2O,Ln=Nd,n=4;Ln=Pr,Yb,n=2;Ln=Sm,Eu,Dy,n=1〕.All the water molecules were uncoordinated.Dinuclear complexes were observed in the coordination environment.The coordination number of central ions was nine.

经元素分析、红外光谱、紫外光谱、核磁共振谱、质谱、摩尔电导、差热热重分析确证结构，其化学式为C34H32O8N2LnCl·nH2O，简写为：(L42LnCl·nH2O，Ln=Nd，n=4；Ln=Pr，Yb，n=2；Ln=Sm，Eu，Dy，n=1；该类配体是以酚氧原子、亚氨基的氮原子、桥联的羧基氧原子以及氯原子同稀土离子配位，形成了九配位的双核配合物。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。