A.-1000Hu B.-500Hu C.0Hu D.+500Hu E.+1000Hu
A.窗口 B.濾過器 C.準(zhǔn)直器 D.探測(cè)器 E.定位系統(tǒng)
A.半值全寬 B.對(duì)比度指數(shù) C.百分線對(duì)數(shù)(LP%) D.線對(duì)數(shù)每厘米(LP/cm) E.線對(duì)數(shù)每平方厘米(LP/cm)