侦毒管 zhēndúguǎn detector tube Definitions Defs Origin Strokes Stroke Words Sentences Sents 侦毒管 偵毒管 zhēndúguǎn detector tube a device used for detecting the presence of toxic or poisonous substances in the air or a sample
侦毒管 偵毒管 zhēndúguǎn detector tube a device used for detecting the presence of toxic or poisonous substances in the air or a sample
