This paper introduces especially the constitution and operating method of the axle-towed mud-layer sweeping instrument.

同时介绍了专门研制的轮轴拖曳式浮泥着底扫海器的结构与使用方法。

youdao

This paper introduces especially the constitution and operating method of the axle-towed mud-layer sweeping instrument.

同时介绍了专门研制的轮轴拖曳式浮泥着底扫海器的结构与使用方法。

youdao