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natural gas to hydrocyanic acid
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工学
天然气化工
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natural gas to hydrocyanic acid
天然气制氢氰酸
以天然气、氨气为原料,在高温和催化剂作用下发生反应直接制取氢氰酸的工艺。主要使用天然气制氢氰酸,中国的氢氰酸主要来自丙烯腈副产。
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river management
river-marine vessel
river meander restoration
river mechanics
river morphology
river mouth landform
River Nanxi Scenic and Historic Area
river network
river observation
river pattern
river prawn
river pusher barges
river reach
river regime
river regime chart
river regulation or channel improvement
river regulation planning
river regulation structure
river restoration project
river revetment right
rivers and lakes census in China
rivers and lakes health assessment
rivers and lakes survey
river sand-mining planning
Rivers and Mountains by Wang Hui
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