单词	約一千
释义	同ABOUT
随便看	ratio of revolution ratio of revolution difference ratio of revolutions ratio of rise ratio of rotating speed difference ratio of runoff ratio of segregation ratio of similitude ratio of slenderness ratio of slope ratio of specific hear ratio of specific heat ratio of specific heat capacity ratio of specific heats ratio of stroke to diameter ratio of surplus to net worth ratio of the circumference of a circle to its diameter ratio of tip-section chord to root-section chord ratio of trade account payable to purchase ratio of transformation ratio of transformation of current transformer ratio of transformation of potential transformer ratio of transformer ratio of winding ratio of 「off」 to 「on」impedance