L振动类型 Stretching(伸缩振动 _ Bending(弯曲振动)Organic Chemistry Organic Chemistry Xiamen Xiamen University University 振动类型 振动类型 Stretching( Stretching(伸缩振动 伸缩振动 )) Bending ( Bending (弯曲振动 弯曲振动 ))