名词脏污; 污迹; 浓烟
smudginess
1. 脏污：smudgily 污点 | smudginess 脏污 | smudgy 脏污的
2. 污物：89 short circuit checking 测短路 | 90 smudginess 污物 | 91 spot welding by laser 激光点焊