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food chain of aquatic ecosystem
释义
food chain of aquatic ecosystem
Encyclopedia
农学
食物链
释
food chain of aquatic ecosystem
水生生态系统食物链
在水生生态系统中,从植物、细菌和有机物开始,物质和能量通过摄食与被摄食在各营养级的水生生物间依次传递所形成的链状营养关系。当能量在食物链传递时,每经过一个营养级就有一部分能量会损失掉。因此,食物链不可能无限加长,水生生态系统食物链的营养级通常只有4~5级。
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subsea tunnel
subsea valve
subsea vertical connector
subsea wellhead
subsea wellhead equipment
subsea wet-type tree
sub-seed zone
subselfsimilar set
subsemifield
subsemigroup
subsemilattice
subsemiring
subsequence
subsequence最长递增散布子序列
subsequent
subsequent adjustment
subsequential limit
subsequent treatment
subsequent yield surface
subseries
subseries convergence
subserosa
subset
subset bounded from below
subset of a lattice
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