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herd structure of grazing livestock
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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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closed n-sphere
closed object
closed oil gathering process
closed-open set
closed operator
closed orbit
closed orthogonal sequence
closed orthogonal system
closed orthonormal system
closed path
closed path Green's function
closed path; loop
closed path space
closed pipe
closed plane
closed pneumothorax
closed point
closed point set
Closed Population
closed power station
closed professional sports league
closed pseudo-manifold
closed quadrature formula
closed quantum system
closed range theorem
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