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1·Once the program is loaded, only a few parameters are given, the development drawings of variable pitch helical blade will be obtained.

该程序一经调用，只要给出几个相关的参数，即可绘出变螺距螺旋面展开图。

2·The utility model relates to an improved composite helical blade, belonging to the technical field of parts of rotary helical conveyor.

本实用新型是一种改进的复合螺旋叶片，属于回转式螺旋输送机零部件技术领域。

3·Several baiting plans of helical blade are elaborated and gets the optimum one after comparison and introduces the simple machining methods.

阐明了螺旋输送机螺旋叶片的几种下料方案，分析比较后得出选择哪种方案最佳，并介绍了其简易加工方法。

4·CAD model of LS200 helical structure is established by dividing the helical body into helical axis and helical blade and finite element meshing is performed.

将螺旋体分解成螺旋轴和螺旋叶片两部分，建立LS200螺旋体结构的CAD模型，并对其进行有限元网格的划分。

5·It is made of aluminum alloy with a certain Angle of helical blade, and is fixed at the front part of shell constriction. It forces the fluid to form strong eddy.

用铝合金制成，具有一定角度的螺旋叶片，它固定在壳体收缩段前部，强迫流体产生强烈的漩涡流。

6·The fastener incorporates two or three loosely wound loosely wound thread-cutting blade-like helical projections (5) extending radially from a solid axial core (2).

该紧固件具有两个或三个切削松卷螺纹的刀状突起(5)，该刀状突起从实心的中轴(2)向外放射状延伸。