三聚体

Three stable structures of the dimer and trimer have been obtained by the optimized geometries and frequencies calculation.

构型优化和频率计算得到3个稳定的二聚体和三聚体氢键异构体。

After a short reaction time most of the monomer will have disappeared and the reaction system will contain a mixture of dimer, trimer and other low polymers

经过短时间反应后，大多数单体消失，反应体系将是含有二聚体，三聚体和其他低聚物的混合物。

It was concluded that PG not only played an important role in trimer formation but also effected the pigments binding and the energy transfer within the LHCⅡ.

以上实验结果证明，PG及其反式十六碳一烯酸不仅在LHCⅡ三聚体的形成中具重要作用，而且还影响色素分子在LHCⅡ三聚体中的结合状态以及叶绿素b到叶绿素a的正常能量传递。

The oligomerization of isoprene with titanium tetrachloride as catalyst and alkylaluminium chlorides as promotor was studied, and especially the effects of the reaction conditions on the synthetic activity and selectivity of dimer and trimer were investigated in detail.

研究了以四氯化钛为主催化剂，以烷基铝为助催化剂催化异戊二烯的低聚反应，详细考察了各种反应条件对催化合成二聚体及三聚体的活性和选择性的影响。

The hydrogen-bonded dimer and trimer formed between 1,3,5-benzenetricarboxylic acid and bipyridine have been investigated using a density functional theory method and 6-31＋＋G** basis set.

使用密度泛函理论B3LYP方法和6-31++G**基函数对1，3，5-苯三甲酸与联吡啶形成的氢键二聚体和三聚体进行了理论计算研究。

A systematic convergence tests for hyperspherical potential curves, channel functions, are performed to assess the validity and efficiency. The challenging three-body problem with complex channel-coupling is solved efficiently and accurately. Accurate ground-state energy, structure parameters, and rotantion constants for Ar2Kr and Ar3 are obtained and compared to other theoretical values in the literatures.

系统研究了超球势曲线、道函数的特征与收敛性；实现了有复杂多通道耦合时重惰性原子三聚体的精确求解，得到了Ar2Kr和Ar3惰性原子三聚体精确的基态能量、结构参数及转动常数，并与文献结果进行了比较。

1H-imidazolyl)-1H-imidazolium chloride-4-aminobenzoic acid, 2,2-bi-1H-imidazolium bis(3,4,5-trihydroxy benzoate) tetrahydrate and bis2-(2-1H-imidazolyl-1H-imidazolium 3-carboxy-4-hydroxybenzene-sulfonate monohydrate have been synthesized and characterized by X-ray diffraction methods.

在化合物中，晶体结构中的基本单元是一个通过氢键模式R_2~2(9)和R_2~1(7)构成的氢键三聚体PABA…H_3biim~+…Cl~-，这个三聚体基本单元又通过N-H…Cl氢键相互作用形成了一维带状结构。

BR is embedded in the purple membrane and organized in trimeric unit arranged in a hexagonal twodimensional crystalline lattice, there are about 30 lipid molecules surrounding a BR trimer.

BR分子在紫膜中以三聚体的形式存在，并形成二维的六角型晶格，每个三聚体周围约有30个脂质分子。

The polar and charged interactions between two trimers in this hexamer are completely different from that of C-PC and R-PE hexamers.

同时六聚体内三聚体之间的离子和极性相互作用也完全不同于C-藻兰和R-藻红六聚体。

Polyols can be divided into latex polyol and dispersion polyolaccording to the way of preparation. In this paper, acrylic latex polyol and acrylic dispersionpolyol were synthesized respectively. One kind waterborne polyisocyanate, which was waterbornehexamethylenediisocyanate trimer, was obtained by hydrophilic modification. Andisophorone diisocyanate trimer (T1890E), which can formulate into 2K-WPU coatings withpolyols, was selected from the unmodified polyisocyanates.

本文合成了两种羟基组分：丙烯酸乳胶多元醇和丙烯酸分散体多元醇，亲水改性得到了一种水性多异氰酸酯组分：水性六亚甲基二异氰酸酯三聚体，同时在未改性的多异氰酸酯组分中遴选了一种多异氰酸酯：异佛尔酮二异氰酸酯三聚体(T1890E)，可用来组成双组分水性聚氨酯涂料。

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。