工程化学

Chromic trioxide and chromium hemitrioxide are determined with iodometry, the coefficient of variation of chromic trioxide is 0.056%, and the recovery of marked compound is 99.82-99.83%; the coefficient of variation of chromium hemitrioxide is 1.45%,and the recovery of marked compound is 98.55-99.26%; iron is determined by complexometric titration, the coefficient of variation of iron is 1.73%, and the recovery of marked compound is 99.12-99.23%;sulfate is determined by complexometric titration, the coefficient of variation of sulphate is 0.16%, and the recovery of marked compound is

Analysis Of The Chromium Electroplating Wastewater By Oxidation-reduction And Complexometric Titration-化学工程与工艺-本文采用氧化还原滴定法与络合滴定法对镀六价铬的废水中铬酸酐，三氧化二铬，铁和硫酸根的含量进行了测定：铬酸酐和三氧化二铬用碘量法测定，铬酸酐的变异系数为0.056%，加标回收率为99.82-99.83%，三氧化二铬的变异系数为1.45%，加标回收率为98.55-99.26%；铁用络合滴定法测定，其变异系数为1.73%，加标回收率为99.12-99.23%；硫酸根用络合返滴定法测定，其变异系数为0.16%，加标回收率为

He was part of a team of chemists at NASA's Jet Propulsion Laboratory in California, which was developing a device for preventing the contamination of spacecraft traveling on Mars and in outer space .

他是 nasa Jet 推进工程实验室中的一个化学专家小组中的一员，负责研发防止去火星的太空船以及外太空的废物污染的仪器。

Professor Kevin Kendall is an expert from the School of Chemical Engineering at the University of Birmingham.

凯文教授，是伯明罕大学化学工程的专家。

Robert Langer an Institute Professor of chemical engineering at MIT and one of the nation's foremost scientists.

兰格博士进行了一次谈话，他是麻省理工学院的一位化学工程教授，也是国家的第一流科学家。

With a quantitative research on the chemical and clay compositions of marly stones, their weathering rocks and residuals, as well as SEM observations, the process of dissolution of CaCO 3 and concentration of clay minerals with complex...

通过泥灰质岩石及其不同风化岩和残坡积土的化学成分、粘土矿物成分定量研究和扫描电镜观察，揭示了 Ca CO3溶蚀和粘土矿物富集过程及粘土矿物的复杂成分，发现了风化过程中伊利石向伊利石/蒙脱石混层粘土矿物的转化，解释了岩土工程性质恶化的原因，从而提高了地质研究和地质灾害研究的水平。

With a quantitative research on the chemical and clay compositions of marly stones, their weathering rocks and residuals, as well as SEM observations, the process of dissolution of CaCO 3 and concentration of clay minerals with complex components has been disclosed, and the conversion of illite to mixed-layer illite/montmorillonite discovered, which explain the reason for deterioration of geotechnical properties of the rocks and soils, thereby enhancing the level of geological and geohazards researches.

通过泥灰质岩石及其不同风化岩和残坡积土的化学成分、粘土矿物成分定量研究和扫描电镜观察，揭示了CaCO3溶蚀和粘土矿物富集过程及粘土矿物的复杂成分，发现了风化过程中伊利石向伊利石/蒙脱石混层粘土矿物的转化，解释了岩土工程性质恶化的原因，从而提高了地质研究和地质灾害研究的水平。

So far, the school has been in economics, management, etc. 2-disciplinary group is senior academic titles at the provincial level appraisal and Mechanical Engineering, Chinese Language and Literature, ideological and political education, mathematics, chemistry, and other 5-disciplinary group senior vice-provincial title Review of the right disciplines.

到目前为止，学校已获得经济学、管理学等2个学科组正高级职称省级学科评议权和机械工程、汉语言文学、思想政治教育、数学、化学等5个学科组副高级职称省级学科评议权。

Coupled Van der Pol oscillators is a kind of representative dynamical system in biological engineering, electronic and electric theory, chemical dynamics and mechanical oscillation systems.

耦合Van der Pol振子是生物工程、电子电路理论、化学反映动力学和机械振动等领域具有广泛代表性的一类动力系统。

Surfactant systems, especially micelle and microemulsion systems, have been extensively applied to chemical engin...

表面活性剂体系具有广泛的应用价值，特别是胶束和微乳液体系的应用已渗透到化学工程、油田开发和医药等诸多领域。

Tissue engineering is a new rising subject with the development of life science,materials science,chemistry science,its core is to establish three-dimension comples of cell and biological medical materials,that is also the living tissue with vitality,which can be used to reconstruct the morphosis and function for damaged tissue and then to achieve permanent replacement.

组织工程是近年来随着生命科学、材料科学及相关物理、化学学科的发展而兴起的一门学科，其核心是建立细胞与生物医用材料的三维空间复合体即具有生命力的活体组织，用以对病损组织进行形态结构和功能的重建并达到永久性替代。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。