什么是 plane?Mathematics A surface containing all the straight lines that connect any two points on it.A flat or level surface.A level of development, existence, or achievement: scholarship on a high plane. An airplane or hydroplane.A supporting surface of an airplane; an airfoil or wing.Mathematics Of or being a figure lying in a plane: a plane curve. Flat; level. See Synonyms at level.A carpenter's tool with an adjustable blade for smoothing and leveling wood.A trowel-shaped tool for smoothing the surface of clay, sand, or plaster in a mold.To smooth or finish with or as if with a plane.To remove with a plane: plane off the rough edges on a board. To work with a plane.To act as a plane.To rise partly out of the water, as a hydroplane does at high speeds.To soar or glide.To travel by airplane.The plane tree.