词汇	derived sets
释义	derived sets 导集
随便看	smoke particle constituent smoke particles smoke particulate smoke pattern smoke pattern test Smoke penetrated through the house smoke period smoke periscope smoke pervasion smoke pH smoke photometer smokepipe smoke pipe smoke pipe casing smoke pipe fire alarm system smoke pipe fire detecting system smoke pipe line fire detector smokepipes smoke plant smoke prevention and dust control smoke prevention and exhaust smoke prevention and extraction smoke prevention and venting systems smoke prevention stair smoke prevention staircase