n. orthodrome
大圆弧长计算球面两点之间的最短距离。
The great-circle distance calculates the shortest distance between any two points on the surface of a sphere.
大圆弧玻璃驾驶室和发动机整体罩壳，形成独特的流线外观造型风格。
Unique streamline shape appearance with circle arc windscreen and curve engine hood for excellence sight.
针对大圆弧形机壳，设计了一次折弯成形结构模具，减少工序，降低成本。
Aimed at large arc shape frame, the die with once bending forming structure is designed, the working procedure is reduced, and the costs are lowed as well.
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