The scattered particles are fanning out from the target. 散射粒子從靶處作扇形散開。
Mosquito-repellent incense smoke is selected as scattering particles in the measurement by means of theoretic analysis and making contrast experiments. 在測量中,經過理論分析與對比試驗,選擇了蚊香煙霧作為散射粒子。