Respectively calculate different sizes and U-value of window's structure of different opening style to be an ideal basis for choosing the best input-output ratio.

分别计算不同尺寸及开启方式的窗结构U值，作为选择最佳投入产出比率的理想依据。

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Note:The structure of agricutural gross output Value of 2007 in this table are adjusted according to Secondary Agricultural Census Data.

注：本表2007年农林牧渔业总产值内部比例为与第二次农业普查衔接数计算所得。

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Natural rubber and sugarcane are staple crops of Hainan province and they are very important components of Hainan's agricultural production structure and agricultural product output value.

天然橡胶和甘蔗是海南主要农作物品种，在海南农业生产结构和农业产值结构中占有重要地位。

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