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forestry economic history
释义
forestry economic history
Encyclopedia
管理学
林业经济管理
释
forestry economic history
林业经济史
林业经济领域的发展历史和林业经济状态的变迁史。从广义上讲,林业经济史是人类以往从事林业经济活动过程的总称,是独立于人的意识之外的客观事件;从狭义上讲,林业经济史是林业经济史学家通过文字以及符号等对上述林业经济活动发展规律的描述解释,是对过去的林业经济和林业经济现象的研究。
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vacuum manometer
vacuum mass spectrometer
vacuum melting furnace
vacuum metallizing plant
vacuum microdischarge
vacuum microelectronic device
vacuum microelectronics
vacuum mold casting
vacuum multi-layer thermal insulation
vacuum nano-diode
vacuum nanoelectronics
vacuum nano-triode
vacuum oxygen decarburization
vacuum packaging
vacuum physics
vacuum polarization
vacuum powder thermal insulation
vacuum preloading
vacuum pressure die casting
vacuum pressurizing casting
vacuum prism spectrograph
vacuum pump
vacuum pump oil
vacuum rapidly quenched amorphous alloy strip
vacuum rapidly quenched Ti- based brazing alloy
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