词汇	回声探测的
释义	回声探测的 echosounding
随便看	upward conveyer upward conveyor upward counterfactual upward course upward cumulation upward current up-ward current upward current classifier upward-current classifier upward current of air upward cut-and-fill mining upward deflection upward developing curve upward deviation upward deviation of eye upward diagonal upward diffusion cloud chamber upward-diffusion cloud chamber upward digging upward dislocation upward displacement Upward displacement of diaphragm upward displacement ventilation upward draft upward drilling