词汇	hard grinding stone
释义	hard grinding stone 硬磨石
随便看	geometric optical model geometric-optical model geometric optical theory geometric optic approximation geometric optics geometric optics model geometric optimization problem geometric orbit determination geometric orbit elevation geometric orbit measurement geometric order geometric orientation geometric outline geometric overlap factor geometric pace geometric paces geometric parallax geometric progression growth geometric progressions geometric parameter geometric parameter of railway track geometric parameters geometric parameters measure of tools geometric paramter geometric paratneter