科学家们观测到月球表面有曲折蜿蜒的沟纹，这是由于熔岩流动在月球表面上形成的。
在鞘翅纵沟纹的念珠状结中有管状开口。
There also were openings of ducts in the nodes of elytral grooves that often contained accumulations of some substance.
沟纹膜层的成型是制造减阻膜的关键之一。
Moulding of the film with riblets was the key of the development of the film with riblets.
目的：探讨金属丝手术刀皮下切割治疗眉间纹、鼻唇沟纹并发症的形成原因、预防及治疗。
Objective: To discuss the cause of glabellum wrinkle and nasolabium wrinkle formation and its treatment and prevention.
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