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history of water conservancy in China
释义
history of water conservancy in China
Encyclopedia
工学
水利史
释
history of water conservancy in China
水利史
研究人类社会从事水利活动和水利事业的历史、发展规律以及应用的学科。是水利科学的一个分支,具有自然科学和社会科学交叉学科的特征,既研究水利的历史事实和它自身的矛盾运动,也作为社会发展动力的一个要素,关注水利与社会间的相互影响。
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fire protection level
fire protection of general layout
fire protection of hydropower station
fire protection of reinforced concrete structures
fire protection of steel structures
fire protection of tunnel structure
fire protection system
fire protection system flight test
fire protection technology and engineering
fire protection water supply and hydrant systems
fire protection water supply system of constant high pressure
fire protection water supply system of low pressure
fire protection water supply system of temporary high pressure
Fire Publicity Day
fire pump
fire pumps
fire rescue tools
fire reservoir
fire resistance level
fire resistance level of museum
fire resistance of wood
fire resistance rating
fire-resistant
fire resistant glass
fire-resistant grade of building
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