弧[球面]角  spherical angle

二面角角反射体  Dihedral corner reflector

半弧角  half-arc angle

背弧面  convex surface

磁偏角弧  declination arc

带1/4圆弧面胸墙的沉箱防波堤  Quarter-circular Breast Wall Caisson Breakwater

点弧角  firing angle

电弧弧根位置  arc root position

电弧角  arcing horn

迭弧角  angle of overlap

顶面弧度  top surface camber

多角弧  Polygonal arcs

多角弧表示  representation

多角弧匹配  matching

多重非共面弧形照射  Non-coplanar

沟–弧–弧后体系  trench-arc-back arc system

过渡弧角  Transition arc

恒熄弧角控制  constant extinction angle control

弧–弧碰撞  arc-arc collision