二聚体

A series of polyurethane anionomers were synthesized from isophorone diisocyanate, polyneopentanediol adipate and dimethanol propionic acid.

用异佛尔酮二异氰酸酯、聚己二酸新戊二醇酯和二羟甲基丙酸合成了负离子型聚氨酯离聚体。

The IR spectra of poly isocyanate curing agent with different content of TDI trimer was measured and analyzed.

对不同TDI三聚体含量的多异氰酸酯固化剂的红外光谱进行了测定，采用偏最小二乘法对所得到的红外光谱进行分析，测定了多异氰酸酯固化剂中TDI三聚体的含量，该方法简单快速，结果可靠。

The IR spectra of polyisocyanate curing agent with different content of TDI trimer was measured and analyzed.

对不同TDI三聚体含量的多异氰酸酯固化剂的红外光谱进行了测定，采用偏最小二乘法对所得到的红外光谱进行分析，测定了多异氰酸酯固化剂中TDI三聚体的含量，该方法简单快速，结果可靠。

The reaction of monoporphyrins having different functional groups with dibromopropane gave metalloporphyrin potassium trimer with two alkoxyl linkages(C144H104N12O8K16)and square array tetramer with the property to quench fluorescence.

利用合成带有混合取代基团的卟啉单体和二溴丙烷反应得到了具有荧光淬灭性质的线状卟啉三聚体C144H104N12O8K16和方阵式四聚体。

DFA-PEG polyester was synthesized with DFA and PEG 400 at first, and then bysulfating DFA-PEG polyester with NH_2SO_3H or terminating DFA-EG polyester withrosin acid, two derivant, these are sulfated DFA-PEG polyester and terminateDFA-PEG polyester, were synthesized. The reaction conditions of synthesis wereoptimized by orthogonal experiments.The molecular weight of product was analyzed by GPC.

5以二聚脂肪酸和聚乙二醇400为原料，首先合成了DFA-PEG聚酯，再以DFA-PEG聚酯为衍生体，硫酸化或用松香封端，合成了两种DFA-PEG聚酯衍生物——DFA-PEG聚酯硫酸酯盐和松香酸封端DFA-PEG聚酯，通过正交试验，对合成的条件进行了优化。

Located in the prospecting lines Nos.47 and 37-33 on the middle 270m section, the mineral typomorphic characteristics are as follows: pyrite possesses the combination of octahedron with pyritohedron, pyritohedron with octahedron, etc It appearsas hole-centre and mix center conduction, if being electron-centre conduction, the absolute magnitudes of thermoelectromotive force and thermoelectromotive coefficient of pyrite are bigger relatively; pyrite contains Cu; the relative absorbency in quartz D(subscript H2O0.9403, D(subscript CO2)0.1961, D(subscript CO2)/D(subscript H2O)0.2591 in prospecting lines 37-33 is smaller than average D(subscript H2O1.3267, D(subscript CO2)0.3090, D(subscript CO2)/D(subscript H2O)0.338 2 in the deposit.

江西茅排金矿区270m中段47勘探线及37~33勘探线的矿物标型特征为：黄铁矿形态见有八面体和五角十二面体，五角十二面体和八面体等聚形；出现空穴心型导电和混合型导电黄铁矿，若为电子心型导电黄铁矿，其热电动势和热电系数的绝对值相对较大；黄铁矿成分中检测出Cu；石英相对吸光度（37~33勘探线）D(下标 H2O)0.9403，D(下标 CO2)0.1961，D(下标 CO2)/D(下标 H2O)0.2591，略低于矿区研究样品的平均值D(下标 H2O1.3267，D(下标 CO2)0.3090，D(下标 CO2)/D(下标 H2O)0.3382。

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。

CRP is the member of pentraxins family which two faces of pentamer form a special bi-phase structure: one face is ligand recognition phase; the other face is effector phase. CRP can connect E-LDL with endothelial cells, thus can induce deposition of lipid in intima and activate complement.

CRP是一种双面五聚体结构，每个单体的配体识别位点或受体结合位点分别位于五聚体两个平面上，分别组成配体识别相和效应器相，从而构成特殊的二相性结构。

In the paper, new type of polyurethane ionomers containing carboxyl in soft segments was synthesized with IPDI, DMBA, carboxylated polycaprolactone etc.

本文利用一种新型的聚己内酯、异佛尔酮二异氰酸酯、二羟甲基丁酸等合成了软段含有羧基的聚氨酯离聚体。

The formation of tin dioxide nanotubes on tin substrates anodizing in oxalic acid electrolytes and annealing in the air was investigated. Under optimized electrolyte, oxidation and anneal conditions, nanotubes of tin dioxide were fabricated.

单质锡箔片在草酸溶液中利用电化学阳极氧化合成出前聚体，并将前聚体通过加热氧化制备出具有纳米级孔道的二氧化锡材料。

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。