geometric vectors造句

• This paper applies geometric vector concept to derive the relations between double plane angle ( angle between two planes ) and planar angle when three planes intersects each other , and obtains eight formulae for working out the related angles and expanded dimensions on driver ' s cabs of material handling equipment
  摘要动用几何中向量的概念，推导出3个平面两两相交时，其二面角与平面角的关系，得出8个计算公式，可解决起重运输机械驾驶室的有关角度和展开尺寸的计算。