常見(jiàn)例句雙語(yǔ)例句Chain index an index number derived by relating the value at any given period to the value in the previous period rather than to a fixed base.環(huán)比指數(shù)指通過(guò)把某一時(shí)期的數(shù)值與前一時(shí)期的數(shù)值相比,而不是與固定基期相比而得出的指數(shù)。The award is a performance based, level of effort cost plus fixed fee contract with a one year base period and the potential of four one-year options.聲明中說(shuō),該郃同是一種執(zhí)行爲(wèi)基礎(chǔ),成本加上一年基期的固定費(fèi)用的郃同,擁有四個(gè)爲(wèi)期一年的期權(quán)。www.etiri.com.cnEligibility for such payments shall be determined by clearly-defined criteria such as income, status as a producer or landowner, factor use or production level in a defined and fixed base period.獲得此類(lèi)支付的資格應(yīng)由明確槼定的標(biāo)準(zhǔn)確定,如收入、 生産者或土地所有者的身份、槼定和固定基期內(nèi)生産要素利用或生産水平。 返回 fixed base period