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渔业资源评估计数法
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渔业资源评估计数法
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农学
渔业资源评估计数法
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fisheries resource assessment counting method
渔业资源评估计数法
根据生物统计学的取样原理,利用某些方法推算某一指定地区、特定时段内的渔业资源数量的调查方法。又称渔业资源相对数量调查法。
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beam chemistry
beam column
beam combiner
beam combining fiber laser
beam convergence
beam cooling
beam crane
beam current
beam current; beam intensity
beam current convective instability
beam diameter
beam diaphragm
beam dilution
beam divergence
beam divergence angle
beam dyeing
beamed radiation
beam efficiency
beam emittance
beam energy
beam equation
beam expander
beamflying-spot scanning
beam foil spectroscopy
beam-foil spectroscopy
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