双壁开沟犁，犁头后部有两块曲面铁板的犁，可翻开犁沟两边的泥土，常附有播种机。
A plow equipped with a double moldboard that turns up the soil on each side of the furrow, often having an attached drill for seed planting.
在设计水平直元线犁体曲面时，确定其导曲线的形状和参数是重要的一环。
In the design of plow bottom surface formed by horizontal straight-line elements, it is important to determine the shape and parameters of guiding curve.
本文试图为犁体曲面的设计提供一种新的设计方法——用数学的方法设计犁体曲面。
This paper tries to provide a new method of the plow bottom surface design by a mathematical method.
本文利用贝塞尔曲面描述了犁体曲面并编制了绘制曲面图形程序。
This paper describes the plow body surface and designs the program for the drawing by using Bezier surface.
据此得出直纹和负常曲率两类曲面可作为犁体曲面的基本模型。
Based on this foundation, basic models of plow-bottom surface are ruled surface and negative constant curvature surface.
双壁开沟犁犁头后部有两块曲面铁板的犁，可翻开犁沟两边的泥土，常附有。
A plow equipped with a double moldboard that turns up the soil on each side of the furrow, often having an attached drill for seed planting.
本文阐述的犁体性能与曲面分析，可供高速犁体设计研究参考。
The plow bottom performance and surface analyses in this paper, will be a reference for high speed plow bottom design and research works.
本文介绍由斜螺旋面和单叶双曲面组成的犁面在犁面主参数确定后的工程作图法。
It's introduced in this paper how to draw the engineering drawing of the plow surface formed by a combination of a oblique helicoid and a hyperboloid of one sheet.
本文介绍由斜螺旋面和单叶双曲面组成的犁面在犁面主参数确定后的工程作图法。
It's introduced in this paper how to draw the engineering drawing of the plow surface formed by a combination of a oblique helicoid and a hyperboloid of one sheet.
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