gRNA指导RNAGRn.放大衰减指示(传动比；政府规定)grating subdivision光栅细分gravimetric burette重量(分析)滴定管gravidic gingivitis妊娠性龈炎Grazing intensities放牧强度Graciles pterocalyxn.翼萼龙胆grnmmatical feature语法特点grating diffraction光栅衍射graptolithic facies笔石相Grungy old jeans.肮脏的旧仔裤Gracilaria punctatan.斑江蓠