Influenced by the water depth of ship sea trial area, velocity measurement of deep-draft large-scale ship should be shallow-water corrected with proper method.
受实船试航水域水深的影响，对于深吃水的大型船舶航速测量结果必须采用适当的方法进行航速的浅水修正。
The ship ran aground where there should have been a depth of 35 ft.
这条船在本应该有35英尺深的地方搁浅了。
Before this was discovered, engineers had already built instruments to exploit the principle, for example to measure the depth of the sea under a ship.
在这个原理被发现之前，工程师们已经制造了利用这个原理的仪器，例如测量船下的海洋深度。
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