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- Heavy metals, such as iron and lead, make good gamma-ray shields because of their high density .
重金屬像鐵、鉛等由于密度很大,都是防護射線的最好的防護材料。 - The modes of interaction of neutrons with matter are quite different from those experienced by gamma-ray photons .
中子與物質的相互作用方式和射線光子完全不同。 - The films are developed and the degree of fogging observed is a measure of the gamma-ray exposure .
經(jīng)顯影之后,可以根據(jù)觀察到的模糊發(fā)黑程度來確定r射線的照射程度。 - The verification regulation of gamma - ray calibrator
自然伽瑪刻度器檢定規(guī)程 - Test procedures for germanium gamma - ray detectors
鍺射線探測器的試驗程序 - Germanium gamma - ray detectors , test procedures for
鍺射線探測器試驗程序 - Continuous type environmental gamma - ray monitors
連續(xù)式環(huán)境射線監(jiān)視器 - The verification regulation of gamma - ray tool
自然伽瑪測井儀檢定規(guī)程 - Industrial gamma - ray apparatus for radiography
工業(yè)用射線照相裝置 - Test method for high - resolution gamma - ray spectrometry of water
水的高分辨率射線能譜測定方法