Gas helmet
volume
British pronunciation/ɡˈas hˈɛlmɪt/
American pronunciation/ɡˈæs hˈɛlmɪt/

"gas helmet"的定义和意义

Gas helmet
01

防毒面具, 煤气头盔

a protective mask with a filter; protects the face and lungs against poisonous gases
gas helmet definition and meaning
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