软管通风防毒器injector tube apparatus 防毒 gas defense; antitoxin◇防毒面具 gas mask; 防毒面具罐 gas mask canister; 防毒面罩 respirator; 防毒器材 gas prote...
双语例句
1
To raise the accuracy of the apparatus, improvement has been made by using a whole glass injector to displace the traditional tube for measuring volume change.