| 单词 |
variable-depth sonar |
| 释义 |
variable-depth sonar variable-depth sonar[′ver·ē·ə·bəl ¦depth ′sō‚när] (engineering) Sonar in which the projector and receiving transducer are mounted in a watertight pod that can be lowered below a vessel to an optimum depth for minimizing thermal effects when detecting underwater targets. |
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