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化学工程专业英语考试重点
Math Section:
Real: rational consists of Integer and fraction, decimal fraction, irrational.
Complex
Figures: rectangle; parallelogram; rhombus; trapezoid
3D graphics: rectangular prism; cyclinder; cone; sphere
Number theory: odd; even; prime number
Angles: alternate; corresponding; vertical;
obtuse; acute; straight
Coordinate:
Ordinate
Quadrant
Abscissa
Rectangular coordinate
Basic math symbols and reading writings:
N! : factorial : greater than ≥: greater than or equal to ≤: less than or equal to
2n: square root of n 3n: cube root of n nn: nth root of n
ln (x): natural logarithm of x log (x): logarithm to the base 10 of x
loga (x): logarithm to the base a of x |a|:absolute value of a
xn: the nth power of x x2: the square of x dny/dxn :the nth derivative of y to x
?ny/?xn: the nth partial derivative of y with respect to x
ydx: integral of y with respect to x abydx: integral of y between limits a and b
1,234,567,000: one billion, two hundred and thirty-four million, five hundred and sixty-seven thousand
Phys Section:
Prefix:
Other units:
Temperature: Kelvin(K), Celsius(oC), Fahrenheit
Current: ampere
Volume: 1 cubic meter=1 liter
Force: 1 N(Newton)=105 dyne, 1kgf=9.8N(Newton)
Pressure:1atm (atmosphere)= 101.325kPa, 1kPa=7.5mmHg, 1kPa=0.01bar
Thermal:1J(Joule)=0.2389cal(calorie)
Power:1kW(kilowatt)=1.34HP(horse power)
Viscosity: cp(centipoise)=mPa·s
Charge: 1Ah=3600C 1As=1C(coulomb)
TEM(Transmission electron microscopy): TEM samples of silver nanoparticles were prepared by placing a drop of silver hydrosol on carbon coated copper grids and allowing water to completely evaporate. High-resolution TEM images were obtained, and energy dispersive X-ray (EDX) analysis was performed on Tecnai F30 microscope (FEI, The Netherlands).
SEM(scanning electron microscope): A type of electron microscope that produces images of a sample by scanning it with a focused beam of electrons.
FTIR(Fourier transform infrared spectroscopy): It covers a rang
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