forward ray cone 前向射线锥

backward ray cone [物] 后向射线锥

characteristic ray cone [数] 特征射线锥面

local ray cone 局部射线锥

X-ray cone paralleling X线平行投照

cone-beam x-ray 锥束x射线

cone beam x ray projections 锥形束x线投影

cone ray 圆锥光线

cone-beam ray 锥束射线