华氏度(FAHENHEIT EQUALS) 摄氏度(CELSIUS EQUALS)（℉-32）×5/9 Fahrenheit （℃×9/5）+32 Centigrade1磅Pound(lb) = 0.453692公斤(kilogram) 大约是1磅等于1斤1英里(mile)=1.609千米(kilometer)1英尺( foot/feet)=0.3048米(meter)1英寸(inch)=2.54厘米(centimeter) 1码(yard)=3英尺(foot/feet)=0.91米(meter)1公顷(hectare )=10000平方米(square meter )= 2.471英亩(acre)1加仑(gallon)=3.785升(liter)1盎司(ounce)=28.350克(gram) Length & Area1 inch = 2.54 cm1 foot = 12 inches = 30.48 cm1 yard = 3 feet = 36 inches = 91.44 cm1 mile = 1.6 km1 m = 3.28 feet1 acre = 6 mu

Weight1 pound = 454 g1 kg = 2.2 lb1 oz = 28.35 g1 lb = 16 oz (mass) Volume1 gallon = 4 quart (qt) = 3.79 liter1 qt = 2 pint (pt) = 0.95 liter1 pt = 2 cup = 16 floz = 0.47 liter1 cup = 8 floz ~ 236.~ cc = 240 cc1 floz = 2 tablespoon (tbsp, Ts) = 29.57 ml ~ 30 ml1 tbsp = 3 teaspoon (tsp, ts)1 tsp = 5 cc2 cup = 500 ml1 liter = 4 cup If water, 25℃1 floz water = 1 oz mass1 pint = 1 lb = 454 g 1bar=1atm =760 mmHg=1.013×15 Pa=10.336 mH2O Temperature0 oC = 32 oF25 oC = 77 oF30 oC = 86 oF32 oC = 90 oF 另：美国人使用的纸张和国内的A4是不一样的，他们使用letter size的纸张：大小约为216 x 279。标准A4规格:210*297毫米

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