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中国水利科学技术史
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杩槎
用竹索将木桩扎制成三角体支架,用以修筑临时工程的河工构件。或作杩杈,又称闭水三脚、木马。
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operation of pulverized coal preparation system
operation of regenerative heater
operation of rewriting
operation of sets
operation of several arguments
operation of slight oil ignition
operation of steam turbine oil system
operation of stream turbine
operation of substitution
operation of symmetric difference
operation of the same kind
operation of tourism industry
operation of (ultra) supercritical units
operation of water-cooled generator
operation of water-hydrogen-hydrogen cooled generator
operation of wet-bottom boiler
operation on a graph
operation on a set
operation on fiber bundles
operation on forms
operation on submodules
operation period of environmental monitoring technical specification
operation period of environmental protection facilities technical specification
operation product expansion
operation research for system
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