单词 | chemical fire extinguisher |
释义 | chemical fire extinguisher [`kem·i·kǝl `fīr ik`stiŋ·gwish·ǝr] CHEMICAL ENGINEERING Any of three types of fire extinguishers (vaporizing liquid, carbon dioxide, and dry chemical) which expel chemicals in solid, liquid, or gaseous form to blanket or smother a fire. |
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