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水生生态系统食物链
释义
水生生态系统食物链
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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electron-beam-induced current EBIC
electron beam induced current method
electron beam irradiation
electron-beam irradiation
electron beam lithography
electron beam lithography equipment
electron beam load
electron beam melting
electron beam melting purification of rare earth
electron beam melting technology
electron beam microfabrication of vacuum electronic device
electron beam modulation
electron beam parameter amplifier
electron beam perveance
electron beam physical vapor deposition
electron beam processing
electron beam quenching
electron beam resist
electron beam semiconductor device
electron beam-solid interaction
electron beam surface alloying
electron beam surfi-sculpt
electron beam tube
electron beam tube display equipment
electron beam welding
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