echo strength造句
造句与例句
手机版
- On 8 August Rines'Raytheon DE-725C sonar unit, operating at a frequency of 200 kHz and anchored at a depth of, identified a moving target ( or targets ) estimated by echo strength at in length.
- The distance to which the radar can detect an object is proportional to the square root of the object's size, due to the one-over-distance-to-the-fourth dependence of echo strength.
- It's difficult to see echo strength in a sentence. 用echo strength造句挺难的
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