放热

The result shows that the elimination reaction and ring closing reaction are synergistic, and the hydrogen in the elimination reaction derives from hydroxyl. In addition, the activation energy of the reaction is 139.2kJ/mol.

计算结果表明，该反应中的消除反应和成环反应是协同进行的，溴化氢消除反应中的氢来自与O(22)相连的羟基氢，反应的活化势垒为139.2kJ/mol，反应放热25.1kJ/mol。

The average roof angle of the three-stringed greenhouse was higher 1.7°than the ordinarygreenhouse in theory, and the sunshine incidence rate was higher 0.4%.

通过采用三弦结构优化温室前屋面采光结构与传统结构相比，结果表明采光面顶部和底部屋面角升高，理论上平均屋面角升高1.7度，阳光入射率升高0.4％，并且优化后在实际应用效果方面三弦结构降低了温室顶部膜面与温室后坡交接处的缝隙放热，施工简单。

Because the heated air used as cooling medium for fast cooling down,it has several strongpoints,for example,its radiative coefficient is low,it can reduce the heat impact to the metal parts of steam turbine when it is heated to a suitable temperature,this method is easy to connect to a system and convenient to operate,and so on.

通过分析比较以上几种快速冷却方式，空气快速冷却以加热后的空气作为冷却介质，由于具有低的放热系数，加热到合适的温度可减少对汽轮机金属部件的热冲击，连接系统简单，操作简便等优点。

The thermodynamics about the buckwheat microporous starch absorbing the methylene blue follows the monolayer absorption rule of the Langmuir equation. The alkalinity condition monolayer saturated adsorption is 2.9 times higher than acidic condition. When pH value rose from 4.8 to 10.8, the negative value of absorption heats increased, absorption was spontaneous exothermic process, and that was easier to carry on at pH10.8 due to the slight adsorption electrostatic repulsion.

荞麦微孔淀粉对亚甲基蓝的吸附热力学遵循Langmuir直线吸附方程的单分子层吸附规律，碱性条件的单分子层饱和吸附量比酸性条件高2.9倍；pH值从4.8增大至10.8，吸附热负值增大，吸附为放热的自发过程，且在pH10.8时吸附所受到的静电斥力小，吸附更容易进行。

As a new type of synthesis process of materials, self-propagating high-temperature synthesis rose at the end of 1960 s to get compounds in a short time by means of the combustion heat generated by reaction itself.

中文摘要：自蔓延高温合成是二十世纪六十年代末兴起的材料合成新技术，其显著特点是利用化学反应自身放热瞬间完成其它方法无法实现的材料的合成。

According to the test data, the charging time is reduced by 10%40%, and the discharging time is reduced by 10%-15% when the encapsulated stearic acid, sliced paraffin and lauric acid are used and arranged in the storage bed.

根据测试数据得到，与采用传统单一相变材料的储热系统相比，采用硬脂酸、石蜡和月桂酸三种相变材料的储热系统的储热时间减少10～40％，放热时间减少10～15％。

With the help of proper suppositions the calculating process may be s...

文中还对放热系数和输入摩擦热的理论计算作了一些介绍，并通过对一典型齿轮传动的温度计算，初步探讨了求解直齿轮体积温度的若干问题。

The DSC analysis showed that the cold-setting process of PRTF copolymer resins was an exothermic reaction, and the heat flow appeared mainly at the initial stage after the hardener added, and then trended to relax. The PRTF-B7 copolymer resin made from China fir bark extractives had the exothermic peak more obvious than those made from Taiwan acacia bark extractives.

以DSC分析显示其硬化过程为一放热反应，且在硬化剂添加后之初期反应较为明显，随后即趋於平缓，以杉木树皮萃取物为原料之PRTF-B7共聚合树脂有较明显之放热峰。

The analysis of gas-phase chemistry and speciestransfer mechanism clearly show the biggest source of heating substrate is therecombination heat of atomic H on the substrate surface.

气相化学和输运机制的分析表明，原子H在衬底表面的复合放热是HFCVD中衬底加热的主要来源。

The result explained that the favourable relation of irreversible Carnot cycle which has as time of absorption heat and rejection heat as endo-reversible Carnot cycle is optimum. The discussion reveals that this relation is universal satisfying basic favourable for...

结果表明与内可逆卡诺循环有相同吸、放热时间的不可逆卡诺循环的优化关系最佳；讨论说明这一优化关系是线性、非线性传热，内可逆与内不可逆多种情况满足的普遍关系。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐