点穿孔器

spot market

twin spot

field audit【审计】;on-the-spot audit【审计】;onsite audit【审计】

镀锡板缺陷\nblackspot【机】;dark spot【电子】[专业]太阳的\nmacula【天】;shading【电】视

Mongolian spot

spot-type smoke detector【安全】

spot welder

localization of spot of spot