Currently there are two typical spot - beam models with equal beamwidth and equal spot area.目前等波束宽度模型和等点波束面积模型是两种常用的点波束模型.It is important to eliminate or degrade the effect caused by the beamwidth of true seabed.为提高海底地形的...
She's indexed the book by author, by age, and by illustrator.她根据作者、年龄和插图画家分别为该书编了索引。He is well - known as an illustrator of children's books.他是个著名的儿童书籍插图画家.She models for an illustrator.她为一位插图画家当模特儿....