上等烟比例  Fine tobacco ratio

特色优质烟叶  characteristic and high quality tobacco

中等比例  moderate percentage

中等比例尺海图  medium scale chart

比例优化  ratio optimization

比例优势模型  Proportional odds model

部分比例优势  Unconstrained partial-proportional odds

高校优质中水  high-quality middling water in colleges and univer

优等烟煤  semibituminous coal

优等烟煤的  semibituminous

优等质量  superior quality

优质烟田  High quality tobacco producing field

优质优价  high quality and favorable price; higher quality and higher price

资本要素投入的最优比例  optimal ratio of capital input

最优比例制导  optimal proportional guidance law

比叶质量  specific leaf dry weight; leaf mass per unit area

低烟质烟煤  smoke tube

发射核子中-质比  free neutron-proton ratio

进水基质比例  Influent substrate ratio