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保水剂
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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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medium sulfurcoke
medium temperature carbonization
medium temperature coal tar
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medium term
medium-term and long-term budget
medium-term expenditure frameworks
medium-term lending facility
medium-term plan
medium-term planning for the development of the power system
medium-term prediction
medium-term scheduling
medium twist yarn
medium velocity spatter bloodstains
medium wave
mediumwave and longwave transmission system
medium wave antenna
medium wave propagation
medium weight nucleus
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