專(zhuān)業(yè)英語(yǔ)基礎(chǔ)------資料下載頁(yè)
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【正文】 動(dòng) im加強(qiáng)意義 pel, expel, repel, dispel push, drive 推動(dòng) , 驅(qū)動(dòng) 81 專(zhuān)業(yè)英語(yǔ)中常用符號(hào)和數(shù)學(xué)式的表達(dá) 1/2 1/3 2/3 1/4 a half, one half a third, one third two thirds a quarter, one quarter,a fourth, one fourth 82 1/100 1/1000 113/324 a (one) hundredth a (one) thousandth one hundred and thirteen over three hundred and twenty four zero(0,naught) point two five four and two thirds 32483 + _ ? ? ? plus, positive minus, negative plus or minus multiplied by, times divided by 84 be equal to, equals approximately equal to, approximately equals round brackets。 parentheses square (angular) brackets braces ? ? ?? [ ] { } 85 ≤ ≥ ∞ ∵ ∴ less than or equal to more than or equal to infinity because therefore 86 maps into x plus y bracket a plus b bracket closed → x+y (a+b) a=b a≠b a177。 b a equals b。 a is equal to b。 a is b a is not equal to b。 a is not b a plus or minus b 87 a≈b ab ab a≥b ab ab a≤b a is approximately equal to b a is greater than b a is much [far] greater than b a is greater than or equal to b a is less than b a is much less than b a is less than or equal to b 88 a⊥ b x→∞ a≡b ∠ a a‖b a is perpendicular to b x approaches infinity a is identically equal to b。 a is of identity to b (identity , 身份 , 一致 , 特性 , 恒等式 ) angle a a is parallel to b 89 a?b a?b x2 x3 x square。 x squared。 the square of x。 the second power of x。 x to second power x cube。 x cubed。 the cube of x。 the third power of x。 x to the third power the difference between a and b a varies directly as b 90 % 2% ‰ 5‰ x3 xthe square root of x the cube root of x per cent two per cent per mill five per mill 91 lognx log10x logex,ln x log x to the base n log x to the base 10, mon logarithm log x to the base e, natural logarithm, Napierian logarithm Napierian Napierian logarithms 【 數(shù) 】 自然 [內(nèi)皮爾 ]對(duì)數(shù) 92 exponential function of x, e to the power x ex, exp(x) xn sin cos the nth power of x, x to the power n nx1 the nth root of x, x to the power one over n sine cosine 93 tg, tan ctg, cot sc, sec csc, cosec sin1, arcsin cos1, arccos tangent cotangent secant cosecant arc sine arc cosine arc [B:k] (線 , 形 , 度 , 拱 ),電弧 , 弧光(燈 ) 94 sinh cosh ? ?the hyperbolic sine (hyperbolic ) the hyperbolic cosine the summation of the summation of x sub i。 where i goes from 1 to n the product of the product of x sub i, where i goes from 1 to n ??niix1inix1 ??95 |x| b’ b’’ b’’’ f(x) xthe absolute value of x the mean value of x。 x bar b prime(prime 符號(hào)“ 39。‖) b double prime。 b second prime b triple prime function f of x 96 dxdyfinite difference or increment the increment of x dee x。 dee of x。 differential x the differential coefficient of y with respect to x。 the first derivative of y with respect of x differential differential coefficient [數(shù) ]導(dǎo)數(shù) ,微分 ? ?x, ?x dx 97 uy??22dxydnndxydthe second derivative of y with respect of x the nth derivative of y with respect of x the partial derivative of y with respect of u, where y is a function of u and another variable (or variables) 98 ????ba? ?...integral of double integral of nfold integral of integral between limits a and b (… from a to b) 99 vector F F?a2 20186。 7’ 13‖ a sub two twenty degrees seven minutes。 seven feet thirteen seconds。 thirteen inches 100 0℃ 100℃ 32℉ zero degree Centigrade [Celsius] one [a] hundred degrees Centigrade thirtytwo degrees Fahrenheit
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