词汇	tool grinder sharpener
释义	tool grinder sharpener 工具磨机
随便看	principal claim principal clause principal climatic factors principal climatological station principal clock principal coal-bed roof Principal Coast Officer principal coefficient of contraction principal coil principal coincidence principal coincidence curve principal color principal column principal column and row analysis principal commodity Principal comnonents analysis principal competentanalysis principal compoenent analysis principalcomponent principal component principal-component Principal Component Analyses Principalcomponent analysis principal componentanalysis principal composition series