... 粒子交换 particle exchange 粒子族particle family 粒子通量 particle fluence ...
双语例句
1
Three soil characteristics are selected as family classification criteria. They are particle-size class, soil mineralogical type and soil temperature regime.
反映土壤理化性质并影响土壤利用管理的颗粒大小级别、矿物学类型和土壤温度级别是理想的土族分类标准；
2
An elementary particle in the lepton family (not a meson), having a mass209 times that of the electron, a negative electric charge, and a mean lifetime of2.2? 0-6 second.