yieldv.生产；获利；屈服；弯下去n.投资收益；生产量yield ratio屈服比,屈强比yield value屈服值,塑变值,起始值yield index产量指标yield trend产量趋势yield hinge屈服铰yield stock增益股Yield grade产量等级yield limit流动性范围yield focus屈服轨迹yield scale产量标尺