切线: tangent的: 4次方是 The fourth power of 2 i ...仰角: elevation; angle of elevatio ...炮的仰角: gun elevation现时的仰角: present elevation爬高时的仰角: climb(ing) attitude切线的: tangential切线的长: length of tangent line切线的斜率: tangent slope三重切线的: triply tangent沿切线的: tangential切线的切向的: tangential弦和切线的角: angle between chord and tangent沿切线的方向: in umfangsrichtung正切的切线的: tangential天线的机械仰角: mechanical tilt邻接曲线的公切线: continuous curve tangent沿着切线的方向: at a tangent从外点至圆锥曲线的切线: tangent to conic section from external point曲线切线的球面指标: spherical indicatrix of tangent to a curve三次曲线的切线割点: tangental point of a cubic; tangentalpointofacubic正切的,切线的,离开正题的: tangental仰角: [数学] elevation; angle of elevation; angle of gradient; angle of altitude; [军事] quadrant elevation; [电学] tilt angle; elevation angle切线: [数学] tangent (line)线的: ligament; lineal; linear