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动力专业英语作业(官贞珍)
动力专业英语
210102401
任课教师:官贞珍
第一章Engineering thermodynamics作业Chapter 1 homework
1. 中英互译Chinese-English Translation
(1)热力学
(2)高温热源
(3)动能
(4)过热蒸汽
(5)汽轮机叶片
(6)reversible process
(7)Specific enthalpy
(8)Convergent divergent nozzle
(9)steady flow energy balance
(10)critical pressure
2. 用英语简述朗肯循环中的四个理想的基本热力过程briefly describe the Four ideal basic thermodynamic processes of the Rankine cycle in English
图1.朗肯循环Fig1. T-s diagram of a typical Rankine cycle
The process 1-2:
The process 2-3
The process 3-4
The process 4-1
3. 英译汉English to Chinese translation
内容见教材15页第三段。Please see the contents in the third paragraph on page 15 in your textbook.
The use of reheating process is very common in modern steam power plant. ……, and the reheat temperature is frequently equal to the temperature of the steam leaving the boiler.
第二章Fluid mechanics作业Chapter 2 homework
1. 中英互译Chinese-English Translation
(1)速度梯度
(2)一维稳定流动
(3)湍流
(4)处于平衡状态
(5)速度梯度
(6)湍流
(7)运动粘度(8)摩擦系数
(9)阻力
(10)牛顿流体
(11)linear relation
(12) mechanical energy
(13)shear stresses
(14)Reynolds number
(15)turbulent flow
(16)friction head loss
(17)Bernoulli’s equation
(18)boundary-layer separation
(19)sudden contraction
(20)minor losses
2. 英译汉English to Chinese translation
内容见教材21页第四段。Please see the contents in the fourth paragraph on page 21 in your textbook.
Fluid flow can be steady or nonsteady. ……. In the case of turbulent flow, such as rapids or a waterfall, the velocities vary erratically from point to point as well as from time to time.
第三章Heat transfer作业Chapter 3 homework
1. 课后的单词和词组抄写2遍(含中英文)Write out Words and Expressions at the end of Chapter 3 two times.
2. 英译汉English to Chinese translation
内容见教材37页第三段。Please see the contents in the third paragraph on page 37 in your textbook.
In the film condensation process the surface is completely blanketed by a liquid film, heat transfer necessary……. In fact, heat transfer coefficients in drop-wise condensation may be as much as 10 times higher than in film condensation.
第四章Heat
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