New and old designs were dropped from the stern of a trawler and towed across the seabed off the Isle of Man.

试验场地设在英国的曼恩岛海域，两个设计都被从拖船船尾放入海中，拖过海底。

youdao

New and old designs were dropped from the stern of a trawler and towed across the seabed off the Isle of Man.

试验场地设在英国的曼恩岛海域，两个设计都被从拖船船尾放入海中，拖过海底。

youdao