Sub-models are effective labor model, fixed capital model, productive cost model and land productivity model.
次一级的模型包括有效劳动模型、固定资本模型、生产费用模型和土地生产潜力模型。
One extremely hot day, their model suggests, can cut annual productivity by 7%.
他们的模型显示，极端炎热的一天就可以使农作物的年减产量达到7%。
The utility model has the advantages of high productivity, low cost, good product quality, etc.
具有生产率高，成本低，产品质量好等特点。
The utility model has the advantages of high productivity, low cost, good product quality, etc.
具有生产率高，成本低，产品质量好等特点。
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