单词	gas helmet
释义	gas helmet Thesaurus Noun 1. gas helmet - a protective mask with a filter; protects the face and lungs against poisonous gasesgasmask, respiratormask - a protective covering worn over the face gas helmet noun Synonyms for gas helmet noun a protective mask with a filter Synonyms gasmask respirator Related Words mask
随便看	angle meter anglemeter angle of advance angle of anomaly angle of antetorsion angle of anteversion angle of aperture angle of approach indicator angle of arrival angle of asymmetry angle of attack angle of azimuth angle of bank angle of bearing angle of clitoris angle of commutation angle of convergence angle of curvature angle of death angle of declination angle of departure angle of depression angle of deviation angle of dip angle of draught

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