海洋回声

ocean bed───洋底；海床

ocean beds───洋底（oceanbed的复数）

ocean greyhound───海洋灰狗

ocean pout───海鸥

ocean view───海景

oceanic───adj.海洋的；海洋产出的；在海洋中生活的；广阔无垠的

oceanic trench───深海槽；海沟

ocean greyhounds───海洋灰狗

oceanic trenches───海沟

High frequency ground wave radar for near ocean inspection and ocean remote sensor is a method that use ocean echo wave Dopier spectrum to deduce the parameters of ocean situation.───高频地波雷达近海监测和海态遥感技术是一种利用海洋回波多普勒谱反演海态参数的方法。

Compared to common imaging mode, this mode increases SNR of ocean echo by decreasing the bandwidth, then accuracy of fixed position can be improved.───和普通成像模式相比，该模式通过降低带宽的方式来提高回波的信噪比，从而提高了定位精度。

His words echo an important finding after the disaster: villages at higher elevations or those behind sand dunes were often protected from the waves despite their proximity to the ocean.───他的话反映了海啸灾害之后的一个重要结论，即地势较高的村庄或沙丘后面的村庄一般没有受到海浪的影响，尽管它们靠近大海。

Simulation and Calibration of Ocean Echo───海洋回波模拟与定标

An ocean echo signal simulation system for verification and calibration of FMICW high frequency ground wave radar is presented in this paper.

High frequency ground wave radar for near ocean inspection and ocean remote sensor is a method that use ocean echo wave Dopier spectrum to deduce the parameters of ocean situation.