词汇	单位函子
释义	单位函子医identity functor
随便看	acoustic recever acoustic reciprocal theorem acoustic reciprocity theorem acoustic recognition acoustic recognition input acoustic reconstructing acoustic reconstruction acoustic reduction acoustic reduction factor acoustic redundancy acoustic reentry acoustic reference acoustic reference point acoustic reference wind speed acoustic reflection acoustic reflection characteristics acoustic reflection coefficient acoustic reflection coefficient of wood acoustic reflection correction acoustic reflection shell acoustic reflective index acoustic reflectivity acoustic-reflector acoustic reflex acoustic reflex decay