directione(拉)指示, 用法
directionn.方向;指导;用法说明;趋势;目标;管理
directional field方向场
directional tubes定向管
directional drill导向钻机
directional trend定向化
directional verbs趋向动词
direction of view视向
directional plane定向平面
direction service指导性服务
directional audio声频定向
direction of weft纬向