查询词典 tri-ester

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。

Then dendrimer-like polyamidoamine s based on the silica gel surface were 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；利用红外光谱对PAMAM-SG的结构进行了表征，研究了溶液pH值、ρ(Ni2+)和温度对PAMAM-SG吸附Ni2+能力的影响。

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。

Abstract－Online group negotiation mode based on credit brings in credit mechanism, provides an safe and convenient trading platform to both vendor and purchaser, and it is an tri-win mode: Consumers can get goods and better service at a favorable price. Network agency can run without stock, be free of the risk of sale and physical distribution, return and exchange of commodities are taken in charge by suppliers, as a result, network agencies reduce the operation risk and cost, and make agency expense. Suppliers can sell a great deal of commodities, reduce operation cost and inventory risk, and get enough profit and many information of consumers with this mode in such a competitive meager profit times.

文中提出的基于信用的网上集体议价模式引入了信用机制，为买卖双方提供了安全便捷的交易平台，是一个三赢的模式：消费者能以优惠的价格购得商品和更好的服务；网络中介没有库存积压，无需承担销售风险，物流，退货、换货均由厂家负责，降低了自己的经营风险和成本，赚取了中介费用；厂商能在竞争激烈的微利时代，利用此通路出售大量商品，减少作业成本和库存风险，获得足够的利润，此外还可以获得大量的消费者信息。

Application: in medical industry, sodium citrate is the carrier of sodium ion, lemon acid radical can participate in tri-acid sodium body circulating of organism rapidly in human body, the sodium ion stores in the body, so it is often used as antipyretic and the correction pharmaceutical of the acidity of the urine in the medical treatment.

用途：在医药工业上，柠檬酸钠是钠离子载体、柠檬酸根在人体内可迅速参与机体的三钠酸循环，钠离子则在体内储备，因此医疗上常用作退热剂，尿酸度的矫正剂，同时由于其抗凝作用，因此是医疗上重要的抗凝血剂。

If you've played tri-Ace's past games such as Radiata Stories or Star Ocean: Til the End of Time, then you know that the company prefers to keep its RPGs on the action side of the spectrum.

如果你打得三元环的奥运会，过去诸如辐射故事或明星海洋： til的结束时间，那么你知道公司宁愿把它浇铸对行动方的频谱。

By internal quantity (quantitas interna seu in actu primo) is understood that entity, by virtue of which a corporeal substance merely possesses "aptitudinal extension", ie the "capability" of being extended in tri-dimensionaI space.

由国内数量（关于量国际您在工会之一）是理解的实体，凭借一个是有形的物质，只是拥有"智能扩展"，即"能力"的延伸，在三dimensionai空间。

Adenosine tri-phosphate is the main form of energy currency in your body.

腺苷三磷酸的主要形式的能源货币在您的身体。

You'll see a 1930s open cockpit mail plane; a special exhibit on Virginia's Admiral Richard E. Byrd and the first American scientific research aircraft to fly in Antarctica; a classic 1929 Ford Tri-motor; airworthy replicas of the Wright Brothers 1900, 1901 and 1902 gliders; and a World War I SPAD VII in mint condition! Learn which planes earned the nicknames of Rolls Royce, Cadillac and Flying Bathtub.

您将看到1930年代的开放式驾驶舱邮政飞机；一件来自弗吉尼亚海军司令部的特殊展品和第一架飞入南极圈的美国科研飞机；一架老式福特三发动机；怀特兄弟1900、1901和1902年滑翔机的复制品；一架了解RollsRoyce、Cadillac和Flying Bathtub这些绰号由来的一战时期的崭新SPAD VII。

Main contributions and achievements are as follows:A general non-equilibrium rigorous model for RDP is developed in this thesis. Based on the pseudo-homogenous assumption, two main factors reaction and separation are de-coupled, and an RDP model with the same format as that for a traditional distillation process is established. To solve the model with a large number of algebraic equations, modified M-K equations with tri-diagonal matrix form are developed based on the improved Separation Efficiency Functions, which greatly increases the iteration efficiency. This thesis also develops a general reactive distillation dynamic model. Through splitting of the differential variables based on SEFS, large-scaled differential algebraic equations can be solved with the improved Gear's algorithm which makes the dynamic model suitable for the on-line application. A simulation platform for the control loop design and evaluation of RDP by introducing control system equations into the dynamic model is also developed.A lactic acid purification pilot-scale RDP is investigated.

论文对热点问题——反应精馏过程的建模与优化控制相关技术进行了深入的研究，取得了一系列成果：1、建立了反应精馏过程机理模型，基于拟均相假设，将反应和分离过程进行解耦，推导出反应精馏过程的非平衡级稳态模型和动态模型，通过引入推广的分离效率函数，对模型变量进行了合理划分，显著提高了模型求解效率；将动态模型和控制系统方程结合，建立了反应精馏过程控制系统研究的辅助工具。2、全面分析了乳酸提纯反应精馏新工艺试验装置，利用本文建立的过程机理模型，对该试验装置进行了稳态和动态性能分析及水力学核算；设计和分析了单边质量控制方案，比较了间接和直接物料平衡控制两种方案的控制性能。

He became prime minister in 1997 and won international acclaim for his role in the Northern Ireland peace process.

他在1997年成为总理，并且因为在北爱尔兰的和平进程中发挥的作用受到国际社会的赞许。

Mixed Page Sorting Method Using the cuttable user model, this thesis proposes a mixed page sorting method by using cutted user model in server-side and complete user model in client-side.

隐私分级利用的混合式页面排序方法针对个性化搜索中搜索结果排序的问题，本文利用隐私可控开放的用户偏好模型，提出一个在客户端和服务器端分步进行的隐私分级利用的混合式页面排序方法。