查询词典 monotropic

The results showed that M1 and M2 present the enantiotropic nematic phase ,M3 presents the nematic phase with SA,SC and SB smectic phases and M4 presents the nematic phase with SA,SC and SB monotropic phases.

研究表明，单体M1和M2呈现互变向列相，M3呈现向列相和近晶A相、近晶C相和近晶B相，M4呈现向列相和单变SA相、SC相和SB相；聚合物P1和P2呈现向列相，P3和P4呈现SA相和向列相。

In addition, molecular orientation behaviors induced by shearing, electric field and magnetic field were investigated. The space group of the monomers A3EO7 and A9EO7 were determined as P2〓2〓2 and P112/m by means of electron diffraction and X-ray diffraction. Liquid crystalline properties of the monomer and the polymer were studied using DSC, variable X-ray diffraction, TEM and polarized optical microscope. Both monomers exhibit monotropic liquid crystalline behavior, and they also give a metastable phase on the cooling process. The polymer PA9EO7 shows enantiotropic liquid crystalline properties. Thus the rigid polymer backbone is not a fatal defect that completely distorts the packing arrangement of the mesogenic moiety in the side chain liquid crystalline polyacetylene.

结合电子衍射倾转方法和粉末X射线衍射技术，确定了两个液晶小分子A3EO7和A9EO7的晶胞参数和空间群，采用Cerius〓模拟软件，运用分子模拟的方法给出了小分子在晶胞中的排列方式；利用DSC、变温X射线衍射技术和透射电子显微镜研究了小分子和聚合物的液晶态，单体A3EO7和A9EO7表现出单向液晶性质，并且在降温过程中都表现出一个亚稳液晶相或亚稳结晶相，聚合物PA9EO7具有双向液晶性；采用偏光显微镜和X射线平板照相技术，研究了剪切和电场对聚合物分子取向的影响，在不同的液晶态，剪切作用对聚合物PA9EO7具有不同的诱导取向结果，直流电场可以诱导聚合物联苯液晶基元沿施加电场方向取向。

All the complex series based on 4',4''-dicarboxy-1,6-diphenoxyhex- ane (C6-2COOH) and 4',4''-dicarboxy-1,10-diphenoxydecane (C10-2COOH) possessed higher melting and clearing points, usually showed soft crystal or crystalline smectic phases and crystal polymorphs except C10-2COOH/ p -PhBPy complex displaying also an enantiotropic nematic phase, while the complexes based on 4,4'-dicarboxy-α,ω-diphenoxy tetraethyleneglycol ether (C8O4-2COOH) with a longer flexible spacer exhibited monotropic fluidic smectic SmA and/or nematic phases.

研究表明，分别具有较短的6或10个亚甲基的烷烃间隔基的双苯甲酸衍生物4'，4''-二羧酸-1，6-二酚氧基己烷(C6-2COOH)和4'，4''-二羧酸-1，10-二酚氧基癸烷(C10-2COOH)的系列复合物具有较高的熔点和清亮点，一般都只出现结晶近晶相和多晶型转变现象。

They had one to three mesophases and certain phase transition temperature、△H and temperature range of L.C.. They all showed as heating monotropic liquid crystal.

这些化合物有一至三个中介相，有确定的相变温度、相转变焓和相变区间，都为升温单变液晶。

Differential scanning calorimetry and polarizing microscope were used to study their liquid properties. Among them, nine are found to exhibit liquid crystal properties, and most of them displayed as heating monotropic liquid crystals. There are one or two mesophases and certain phase transition temperature,Δ H and temperature range of liquid crystal.

用差示扫描量热仪和偏光显微镜研究了其液晶性，发现其中九个配合物具有液晶性，多为升温单变液晶，有一至两个中介相，有确定的相转变温度、热焓和相变区间。

Two-ring liquid crystal compounds exhibited no mesogenic phase or only a monotropic smectic A phase.

其中二环系液晶化合物不显示液晶相或仅显示单边近晶A相。

The theoretical conversion temperature between nitrendipine I and II is 158.88 ℃, that between nitrendipine I and III is 160.50 ℃ and that between nitrendipine II and III is 158.65 ℃, indicating nitrendipine polymorphs belong to a monotropic system. At high temperature, nitrendipine II and III both converted to I.

理论推导尼群地平I与II，尼群地平I与III，尼群地平II与III的转化温度分别为158.88， 160.50和158.65 ℃，三者均为单变关系，且在高温条件下尼群地平II， III都转变为尼群地平I，在高压条件下， II易转变为I。

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。