单词	白花似雪滿地
释义	同Besnowed
随便看	half-value breadth half-value depth half value layer half-value layer half-value--layer half value layer--half-thickness half value layer {= hvl} half-value layer {= hvl} half-value layer {=hvl} half-value layer meter half-value layer test device half value period half-value period half-value period--half-life-- period of half-life half-value period--half period-- half life(period) half-value period， half period， half life half-value period， half period， half life (period) half value thickness half(-value) thickness half(-value)--thickness half-value thickness half-value thickness--half-thickness half value width half-valve half-valve--depth