单词	前凸盘--前三角
释义	前凸盘，前三角front cam
随便看	plane of symmetry; auxiliary plane of symmetry; axial plane of symmetry; common plane of symmetry; ordinary plane of symmetry; principal plane of tangency plane of the ecliptic plane of the sky plane of top of running rail plane of unconformity plane of vibration plane of weakness plane of yaw plane; optic plane orbit plane or straight lined angle plane pair plane-parallel approximation plane-parallel atmosphere plane-parallel medium plane parallel plate plane-parallel plate plane-- parametral plane; parametral plane pencil