動(dòng)詞 backscatter:

1. scatter (radiation) by the atoms of the medium through which it passes

back.scat.ter

n.（名詞）
The deflection of waves or particles by electromagnetic or nuclear forces through angles greater than 90= to the initial direction of travel.
背向散射，逆散射：波或粒子在電磁力或原子力的作用下，通過(guò)大于90°的角向起始方向的反射

【引伸】
back.scat.ter
v.（動(dòng)詞）