词汇	root toroid
释义	root toroid 齿根超环面
随便看	cycle of money cycle of motion cycle of nitrogen cycle of nutritive materials Cycle of Olympic Games cycle of oparation cycle of operation cycle of operation, operating cycle cycle of operations cycle of organization adjustment cycle of parasites cycle of permutation cycle of plan cycle of pollutants cycle of poverty cycle of preparing production technologies cycle of programming cycle of projects cycle of protest cycle of rebirth cycle of reproduction cycle of river erosion cycle of river erosioncycle of fluvial erosion cycle of run cycle of sedimentation