A radar wave which has been reflected from an object; also, the representation of it on a radar screen.
| 单词 | θ130017 |
| 释义 | the mind > attention and judgement > discovery > instrument for detection > [noun] > radar system > wave or beam (2) echo1944 A radar wave which has been reflected from an object; also, the representation of it on a radar screen. split beam1947 a beam (of radiation, etc.) that has been split into two or more components, spec. as used in a radar technique in which a single aerial… |
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