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水土保持
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水土保持
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水土保持
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soil and water conservation
水土保持
防治水土流失,保护、改良与合理利用水土资源,维护和提高土地生产力,以利于充分发挥水土资源的生态效益、经济效益和社会效益,建立良好生态环境、保障经济社会可持续发展的综合性科学技术。
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power range sub-system
power ratio control
power reactor
power reactors
power reciprocity law
power relation
power remote control panel
power residue
power residue symbol
power rule
Powers
power scada
Power School
power semiconductor device
power series
power series expansion
power series field
power series method
power series representation
power series ring
power series solution
power series space
power series statement
power set
power-set axiom
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