Then he scraped away the dirt, and exposed a pine shingle.接着他刨去泥土, 下面露出一块松木瓦块.They scraped off the barnacles that always encrusted on the ship's hull.他们刮去总是附在船身外面的甲壳动物.She scraped the mud off her boots.她刮掉了靴子上的泥。The...
从波动声学的角度讨论声波测井的探测深度问题.Depth of investigation in sonic logging is studied based on wave acoustics.论文讨论了一种基于声学的弹着点定位方法.In this thesis, an acoustics - based measurement for impact point detection is discussed.专家认为史前巨石柱的建造者知...