单词	争先赛
释义	争先赛sratch race
随便看	radiation--excitation radiation exitance radiation exposure radiation exposure film radiation exposure film badge radiation exposure indicator radiation exposure norm radiation exposure norm{=ren} radiation exposure personnel record radiation ezposure radiation ezposure--survey radiation factor radiation feedback radiation fibrosis radiation field radiation field pattern radiation-field photography radiation field size radiation filter radiation fin radiation fin (flange) radiation flow radiation-- fluorescence radiation flux radiation flux divergence meter