Where the ice passes over especially steep terrain, ripple marks on the glacier surface indicate the icefall.

冰川所过之处，特别是那些地势陡峭的地方，会在冰川表面留下波纹痕迹，提示这些地方有冰川瀑布。

Many sedimentary rocks contain such features as ripple marks, exactly like those we can see forming in sediments at the bottom of present-day lakes or shallow seas.

我们可以看到，现在的湖底或浅海底部的沉积物中形成了波痕。许多沉积岩都含有类似这种波痕的特征。

The group of red stone valleys in Daimeishan can be said to be the gallery of mountains and waterscape, as is also the natural museum of ripple marks and mud cracks;

黛眉山红石峡谷群红岩碧水堪称山水画廊，又是波痕、泥裂等沉积构造的天然博物馆；

Furniture and sliced veneer. Decorative use as substitute for Teak. But Pericopisi easily distinguished because Teak is ring porous wood with clear annual rings and no ripple marks.

家具、平切单板﹐有时可代替柚木﹐淡两者可轻易辨别﹕柚木具年轮﹐而无涟纹。

Six sedimentary structures, ice split seams, ice slid marks, ice collapsed seams, ice induced pellets, ice eroded ripple marks and ice level marks, are newly found in Yellow River delta.

在黄河三角洲新识别出6种冰冻沉积构造：冰劈裂缝、冰成滑痕、冰塌裂缝、冰成球粒、冰蚀波痕和冰位痕。