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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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O/W
Owen bridge
Owendo
Owen D.Young
Owen Jones
Owen-Mazrui Convention
Owens Valley Radio Observatory
Owicki-Gries logic
Owicki-Gries逻辑
OWL
Owl Cluster
Owl Nebula
OWL-S
owl-shaped bronze vessel
owl-tail ridge ornament
owner
owner of cargo
owner of copyright
ownership
ownership of advertising
ownership of forest resources
ownership of means of production in socialist society
ownership of natural resources
ownership of sports event
ownership of trustees
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