大地线切线角  angle of geodesic coutingence

切[线方]向分量  tangential component

切线〔方向〕力  tangential force

切线方向变化率  change rate of tangent orientation

切线方向进给机构  tangential feed mechanism

切线方向迁移  tangential migration

沿切线方向飞出  fly off at a tangent

航线方向角  bearing direction

恒向线方向  rhumb bearing

角平分线方向向量  direction vector of angle bisector lines

对向方向角法  method by reciprocal bearings

测地切线角  angle of geodesic contingence

对角线切片谱  diagonal slice spectrum

横切线线状样条  line transect

极心线切线  centrode tangent; polode tangent

剪切角方程  shear angle equation

六角切向燃烧  tangential firing with burners located at six corners

切线方程  tangential equation; tangent equation

切线方位角  tangent azimuth