angle of reflection
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n. 

角
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coonhound,
coonkin,
coons,
coonskin,
coontie,
coony,
coop,
co-op,
cooper,
cooperage,
相似单词
angle bracket,
angle iron,
angle of attack,
angle of incidence,
angle of inclination,
angle of reflection,
angle of refraction,
angle of view,
angle-between-half-power-points,
angled,