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单词
single superphosphate
释义
single superphosphate
Encyclopedia
工学
湿法磷肥
释
single superphosphate
过磷酸钙
用硫酸分解磷矿直接制得的磷肥。又称普通过磷酸钙,简称普钙。主要有用组分是磷酸二氢钙的水合物[Ca(H2PO4)2·H2O]和少量游离的磷酸,还含有无水硫酸钙组分(对缺硫土壤有用)。过磷酸钙含有效五氧化二磷为14%~20%(其中80%~95%溶于水),属于水溶性速效磷肥,灰色或灰白色粉料或颗粒料(由粉料造粒制成),可直接作磷肥,也可作制复合肥料的配料。
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area of horizon
area of low pest or disease prevalence
area of registered permanent residence
area of visibility
area opaca
area operator and area spectrum
area pellucida
area photometer
area photometry
area-preserving
area-preserving map
area preserving mapping
area-preserving mapping
area-preserving transformation
area principle
area ratio
area rule
area sampling
areas for regeneration
area signal coordinated control
areas of social work practice
area source of water pollution
area source pollution control system
area spectroscopy
area symbol
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