1 解决

118 浏览

• qwertyyu 2021-04-13

In tubular reactors, heat is removed either by providing cooling tubes running parallel inside the reactor, or through external heat exchangers.

专业英语

1 解决

62 浏览

• zzq_123456 2021-04-13

Tubular reactors lead to plug flow conditions, and the concentration of the reactants keeps decreasing along the length of the tube in a tubular reactor.

专业英语

1 解决

126 浏览

• y0000z 2021-04-13

ln chemical reaction engineering probably the most useful scheme is the breakdown according to the number and types of phases involved, the big division being between the homogeneous and heterogeneous systems.

专业英语

1 解决

102 浏览

• 舅姥爷 2021-04-13

The reason for observing only a single reaction rather than two or more elementary reactions is that the amount of intermediates formed is negligibly small and therefore escapes detection.

专业英语

1 解决

55 浏览

• quyu1 2021-04-13

The heat of reaction at temperature T is the heat transferred from surroundings to the reacting system when a moles of A disappear to form b moles of B and c moles of C, with the system measured at the same temperature and pressure before and after reaction.

专业英语

1 解决

47 浏览

• VV8 2021-04-13

When faced with the problem of separating components out of a homogeneous mixture,engineers utilize differences in the properties of the constituents of the mixture to realize the separation.

专业英语

1 解决

44 浏览

• 2726725176 2021-04-13

A successful industrial catalytic process must strike the right balance between the selectivity and activity of the catalyst on the one hand, and its price and life on the other.

专业英语

1 解决

65 浏览

• deng_yulin 2021-04-13

The first law of thermodynamics: for an isolated system, the internal energy of the system remains constant. Ifthe internal energy ofa closed system changes, it can manifest itself as either work or heat, nothing else.

专业英语

1 解决

37 浏览

• Violet_Ice紫冰 2021-04-13

A few statements called laws that have broad application to physical and chemical systems (chemical equilibrium, phase equilibrium, electrochemistry, interface, etc.)constitute the basis and framework of classical thermodynamics.

专业英语

1 解决

65 浏览

• 京东小含 2021-04-13

A more appropriate descrijption of ytical chemistry is "the science of inventing and applying the concepts, principles, and strategies for measuring the characteristics of chemical systems."

专业英语

1 解决

68 浏览

• MrCheng 2021-04-13

Defining 专家 chemistry as the application of chemical knowledge ignores the unique perspective that 专家 chemists bring to the study of chemistry.

专业英语

1 解决

62 浏览

• 77565001 2021-04-13

Ethanol is a colorles and volatile liquid with a mild odor which can be obtained by the fermentation of sugars.

专业英语

1 解决

94 浏览

• 印象 2021-04-13

In chemistry, an alcohol is any organic compound in which a hydroxyl group (-OH)is bound to a carbon atom of an alkyl or substituted alkyl group.

专业英语

1 解决

32 浏览

• qwertyyu 2021-04-13

By international agreement, standards are fixed arbitrarily for the quantities of mass,length, time, temperature, and the mole. These are five of the base units of SI. Currently, the standards are as follows.

专业英语

1 解决

84 浏览

• 7415207 2021-04-13

The Sl system covers the cntire field of science and engineering. The units are derivable from four proportionalities of chemistry and physics; arbitrary standards for mass, length,time, temperature, and the mole; and arbitrary choices for the numerical values of two proportionality constants.

专业英语

1 解决

121 浏览

• 186****0683 2021-04-13

液液反应

专业英语

1 解决

45 浏览

• 何小帅 2021-04-13

气液固反应

专业英语

1 解决

126 浏览

• Goboo 2021-04-13

气液反应

专业英语

1 解决

95 浏览

• 177****9261 2021-04-13

气相反应

专业英语

1 解决

38 浏览

• 一樽还酹江月 2021-04-13

顺序反应

专业英语