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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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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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poly(vinyl acetal)
polyvinyl acetal resin
polyvinyl acetate
polyvinyl acetate adhesive
poly(vinyl alcohol)
polyvinyl alcohol
polyvinyl alcohol fiber
polyvinyl alcohol (PVA)
polyvinyl butyral
poly (vinyl chloride)
polyvinyl chloride
poly (vinyl chloride) fiber
polyvinyl chloride fiber
poly (vinyl chloride) (PVC)
polyvinyl chloride thermoplastic elastomer
poly (vinylene chloride)
poly (vinyl fluoride)
polyvinyl fluoride
polyvinyl formal
poly (vinylidene chloride)
polyvinylidenechloride
poly(vinylidenefluofide—co—hexafluoropropylene
poly (vinylidene fluoride)
poly(vinylidene fluoride)
polyvinylidene fluoride
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