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经济作物结构
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经济作物结构
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cash crop structure
经济作物结构
一个国家、地区或生产单位内,包括蚕桑、棉花、麻类等纺织原料,大豆、花生、芝麻、油菜籽、油茶、油桐等油料,蓝靛等染料,以及烟、茶、糖(甘蔗、甜菜)、药材等四类作物种植面积的比例关系。
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superficies excess
superficies excess and interior deficiency
superficies heat
superficies heat with interior cold
superficies-interior points combination,superficies-interior points association
superficies-relieving formula
superfield
superfield theory
superfine proppant
super fine water
superfine wool
superfinish
superfluid
superfluid component
superfluid core
superfluid density
superfluid glass
superfluid gyroscope
superfluid helium
superfluid helium-3
superfluidity
superfluidity Fermi liquid
superfluidity of liquid 3He
superfluidity of liquid ^3He
superfluid liquid
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