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保水剂
释义
保水剂
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农学
保水剂
释
water-retaining agent
保水剂
一种不溶于水,具有膨胀性且吸水力强的物质。能吸收自身重量几百倍的纯水,并可缓慢释放供作物利用,且能反复吸水。施用于土壤可减少水分养分流失,调节水、肥、气、热状况,改善肥力结构,是较好的土壤改良剂。
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domain name service
domain name service, DNS
domain name space
domain name system
domain name system, DNS
domain name system,DNS
domain name system security
domain name system security extensions
domain name system security extensions, DNSSEC
domain of absolute elsewhere
domain of absolute future
domain of absolute past
domain of a correspondence
domain of action
domain of acts
domain of a function
domain of a mapping
domain of a morphism
domain of an operator
domain of applicability
domain of attraction
domain of connectivity
domain of convergence
domain of curvature
domain of definition
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