查询词典 a pendent

Blue-light-emitting polyfluorene derivatives with bulky bipolar pendent groups at C-9 position has been synthesized. The combination of electron-deficient oxadiazole and electron-rich triphenylamine affords a highly efficient light-emitting material by improving charge injection and transport in electroluminescent device.

具有刚硬双极性侧链的高效率蓝光聚茀高分子材料已成功被合成，藉由在fluorene的9号碳位置导入了有利於传输电子的oxdiazole片段与利於传输电洞的triphenylamine片段所结合的TPAOXD，不仅增加电荷注入与传输能力，同时提高材料的热稳定性质(Tg： 186 oC)。

First, N'-(4-aminophenyl)-N'-4-(5-phenyl-1,3,4-oxadiazol-2-ylphenylbenzene-1,4-diamine was prepared and polymerization was carried out by direct polycondensation with a series of dianhydrides to obtain polyimides containig triphenylamine units in the main chain and 1,3,4-oxadiazole moieties as pendent group.

首先合成新型双胺N'-(4-aminophenyl)-N'-4-(5-phenyl-1，3，4-oxadiazol-2-ylphenylbenzene-1，4-diamine后，与一系的芳香族二酐进聚缩合反应，可制得一系列三苯胺为主链且1，3，4-恶二唑为侧链的聚醯亚胺。

The child dabbled his dangling feet in the water; fuchsias in hanging pots; pendent bunches of grapes; a suspended fireplace.

小孩在水中摇晃着脚；悬挂的灯笼海棠；悬挂着的葡萄；悬挂的壁炉。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。