| 单词 | lock |
| 释义 | lock [läk] CIVIL ENGINEERING A chamber with gates on both ends connecting two sections of a canal or other waterway, to raise or lower the water level in each section. DESIGN ENGINEERING A fastening device in which a releasable bolt is secured. ELECTRONICS To fasten onto and automatically follow a target by means of a radar beam. ENGINEERING See <<air lock>> METALLURGY A condition in forging in which the flash line is in more than one plane. ORDNANCE 1. Position of a safety mechanism which prevents a weapon from being fired. 2. Fastening device used to secure against accidental movement, as on a control surface. 3. To secure or make safe, as to set the safety on a weapon. |
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