二聚的

In the process of producing soft urethane polyester foamed plasics,CFCs as forming agent are replaced by cyclopentane whose value of ozone depletion is zero to decrease the destruction of environment,and the modified poly-ether-alcohol is used as reactants through one-step reaction.

为了解决软质聚氨酯泡沫塑料生产过程中的环保问题，采用臭氧消耗值为零的环戊烷为物理发泡剂替代严重破坏臭氧层的氯氟烃，以改性聚醚多元醇与甲苯二异氰酸酯等为主要反应物，一步法反应研制试产了软质聚氨酯泡沫塑料。

The catalyst system for polyisocyanates has high reality and prompts to generate thiourea dione accounting for large proportion of polyisocyanates.

本发明所提供的异氰酸酯低聚用催化剂体系，具有高活性并且还促使生成占制成的多异氰酸酯中相当比例的脲二酮。

Its steps include these:(1) purification of WPA;(2) neutralization reaction between purified WPA and sodium carbonate for the salt mixture of disodium hydrogen phosphate and monometallic sodium orthophosphate;(3) adjustment of the mixture's neutralizing degree with additive acid or alkali;(4) quick separation of crystal with additive organic solvent under continue stir;(5) polymerization of crystal under the high temperature for the high quality product of STPP.

其步骤为：(1)湿法磷酸净化；(2)净化后的磷酸与碳酸钠中和反应生成磷酸一氢钠和磷酸二氢钠混合盐溶液；(3)用酸、碱调节确定该混合盐溶液的中和度；(4)加入有机溶剂，通过不断地搅拌使晶体快速析出；(5)晶体经高温聚合，生成高品质的三聚磷酸钠。

Experiments and application situation on determination of dysprosium by fluorescence analysis and derivative spectrum analysis method are reviewed.

对近10a来的用荧光法和导数光谱法测定镝的研究及应用进行了综合报道。研究了在聚乙二醇2000 硫酸铵铝试剂双水相体系中，铝试剂作萃取剂，对镧、镨、镝的萃取行为。

In March 2005, I followed my elder sister to her cell group with another church.

二零零五年三月，我的姊姊带我到另一间教会的家聚中聚会（我现时已转到这教会聚会）。

In the forth chapter, aggregation、self-coiling and quench of new type of linear donor was investigated.

第四章，我们用稳态荧光光谱法研究了并入萘芳环的线性寡聚乙二醇醚衍生物的簇集、自卷和淬灭。

Enterprises to more than 20 years experience in production and operation management, the industry-the elite of the Guangxi is home to "create the most practical use of school furniture" for the purpose.

企业以二十余年生产经营管理经验，聚广西本行业的精英，秉承&造最实用的校用家具&为宗旨。

TEOS and PEG with different relative mol. wt. were used as raw materials to prepare single layer antireflective SiO2 films on borosilicate glass by sol-gel method. The relationships between preparing processes and optical properties of the films were investigated.

以正硅酸乙酯、不同相对分子量的聚乙二醇为主要原料，采用溶胶－凝胶法在硼硅酸盐玻璃板上制备单层SiO2减反射薄膜，研究了制备工艺对薄膜光学性能的影响。

Then dendrimer-like polyamidoamine on the silica gel surface was prepared using Micheal addition of the amino and methyl acrylate,and ester-exchange of ethylene diamine and the ester group.

用硅烷偶联剂对硅胶表面进行氨基功能化，利用氨基与丙烯酸甲酯发生的Michael加成反应和乙二胺与酯进行的交换反应在硅胶表面合成了聚酰胺-胺树状大分子。

Amino functional silica gel was synthesized by reacting silane coupling agent with silica gel. Then dendrimer-like polyamidoamine on the silica gel surface was prepared using Micheal addition of the amino and methyl acrylate, and ester-exchange of ethylene diamine and the ester group.

用硅烷偶联剂对硅胶表面进行氨基功能化，利用氨基与丙烯酸甲酯发生的Michael加成反应和乙二胺与酯进行的交换反应在硅胶表面合成了聚酰胺－胺树状大分子。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。