化学变化

In this study, WCS was obtained by carbonizing wood material impregnated with PF resin without oxygen. The yield, properties, effect factors, microstructure of the products and the chemical reaction were analyzed.

本研究采用酚醛树脂浸渍木质材料，经过高温烧结制得木陶瓷产品，并对产品得率、性能、影响因素、微观结构以及烧结过程中的化学变化等进行了分析，并探讨了阻燃处理提高产品性能的可能性。

Objective:To understand the chemical changes in the decocting process of Radix et Rhizoma Rhei.

目的：了解大黄煎煮过程中的化学变化。

The difficulty of degumming storage－damaged soybean crude oil and high phosphorous content of degummed oil are apparently related to chemical changes of the phosp holipids compositions.

受损害大豆毛油水化脱胶困难及脱胶后油中磷含量偏高均与磷脂组份发生化学变化有关。

In order to prevent heat flow from transferring to internal structural componants, thermal protective composites are used to absorb and consume plenty of heat by means of mass losing caused by complicated physical and chemical reactions of decomposing, melting, vaporizing, subliming and so on, and widely applied as thermal protective components of strategical and tactical missiles and other re-entry spacecrafts.

烧蚀防热复合材料在热流的作用下能发生分解、熔化、蒸发、升华等多种消耗热能的物理—化学变化，藉材料自身的质量消耗带走大量热能，阻止热流传入结构内部，在战略战术导弹和航天器的防热部件中得到广泛应用。

"We've always assumed that life was a planetary phenomenon. Only on planets would you have the liquids thought necessary for the chemistry of life," he said."So if you could have life in the hot gases of a star, or in the hot, interstellar gas that suffuses the space between the stars, well, not only would that be 'life as we don't know it' but it might be the most common type of life."

&我们总是认为生命是行星上存在的一种现象，因为只有在行星上才拥有生命化学变化所必须的液体，&肖斯塔克称，&因此，如果在恒星的高温气体中，或者在恒星与恒星之间充满太空的星际热气中存在生命，这种'生命'将是我们所不了解的，同时却又是最普遍存在的一种生命。&

By comparison with docosanoic acid and sulfurized ios-butyl olefin, it was found that when sulfur element was int...

钢球磨损表面XPS分析结果表明，在摩擦过程中硫化廿二酸发生了摩擦化学变化，表面EPMA分析结果表明其表面保护膜富含氧和硫

A solid takes part in chemical change insofar as it dissolve or volatilizes .

固体在溶解或挥发的状态下才能参与化学变化。

It consists of three ingredients: baking soda, the source of the carbon dioxide gas that causes the dough or batter to rise; an acid, such as cream of tartar, calcium acid phosphate, or sodium aluminum sulphate, which, when the powder is combined with a liquid, causes the baking soda to release its gas; and a starch such as cornstarch or flour, to prevent the powder from absorbing moisture.

酸性物质遇到液体以后，就会让小苏达发生化学变化，产生二氧化碳气体；最后还有淀粉，比如面粉或者玉米淀粉，作用是防止粉末吸湿受潮。很多中文食谱把BAKING POWDER翻成泡打粉，其实深圳一些街市小铺，小超市有买7毛一包的泡打粉，用的就是明矾，建议大家尽量去找用塔塔粉的。

Result: Handling with the fresh Herba Andrographis according to current pharmacopeoia's technology, it showed that only dehyandrographolide can be detected. It indicated that the main factor that leads to chemical change is the heating process in the process of production.

结果：穿心莲片按现有的药典工艺生产，穿心莲内酯损失殆尽，只能检测到脱水穿心莲内酯，引致化学变化的主要因素是工艺过程中的加热。

The color of feces and bile of the chemical change is closely related to the color of bile which contains bile pigment type and concentration.

大便的颜色与胆汁的化学变化有着密切的关系，胆汁的颜色与其中所含的胆色素的种类和浓度有关。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。