With accordion pleats; when folds of skin are arranged to form a fan-shaped structure.
具褶的有褶的；当皮肤的折层被排列成一个扇形结构时。
The design approach of internal structure parameters of flat fan nozzles with a lateral V-shaped cut was presented.
对侧向V型狭缝式扁平扇形喷嘴的内部结构参数设计方法进行了研究。
This paper introduces the character of hardware and software structure about MTC200 system, and narrates the application of it to the rebuilding of fan-shaped gear cutting numerical control machine.
本文介绍了博世-力士乐公司的M TC 200开放式数控系统硬件及软件结构特点，阐述了该系统在齿扇加工专用数控机床改造中的应用。
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