常見(jiàn)例句雙語(yǔ)例句Crude oil is commonly classified as light, medium or heavy, referring to its gravity as measured on the American Petroleum Institute (API) Scale.原油通常分爲(wèi)輕型,中型或重型,所指的是對(duì)美國(guó)石油學(xué)會(huì)(API)嚴(yán)重程度的槼模衡量。blog.sina.com.cnThe numerical result calculated by the formula for estimating the cetane number of distillate fuels from American Petroleum Institute (API) gravity and midboiling point.用美國(guó)石油學(xué)會(huì)比重度和中沸點(diǎn)估算餾分燃料十六烷值公式計(jì)算得到的數(shù)值結(jié)果。www.infopetro.com.cn 返回 american petroleum institute gravity