同轴圆弧 tóng zhóu yuán hú

DEFINITIONS

  1. coaxial circular arc
  2. concentric arc (in spherical geometry)

CHARACTERS

同 tóng
HSK 1
same, similar; together with
轴 zhóu axle, axletree; pivot; axis
圆 yuán
HSK 5
circle; round, circular; complete
弧 hú wooden bow; arc, crescent