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herd structure of grazing livestock
释义
herd structure of grazing livestock
Encyclopedia
农学
放牧家畜畜群结构
释
herd structure of grazing livestock
放牧家畜畜群结构
在某种放牧家畜群体中,公母畜群各自年龄比例的结构,即畜群总头数中,按性别、年龄和在生产过程中的作用人为划分的组群在整个群体中所占的比重。又称畜组结构、畜群构成。
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Relief
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relief brick sculptures in Henan Province
relief brick sculptures in Sichuan Province
Relief Committee of Nanyang Overseas Chinese for China's Refugees
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relief developing machine
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relief of urban vagrants and beggars
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Reliefs in Wang Chuzhi’s Tomb
reliefs on sarira stupa in Qixia Temple
relief stone sculpture in Northern Jiangsu Province
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