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primitive agriculture
释义
primitive agriculture
Encyclopedia
经济学
农业
释
primitive agriculture
原始农业
主要使用石器、骨头等简单工具来从事农事活动的农业。是农业的第一个历史阶段。
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hydrometeorological elements
hydrometeorology
hydrometer
hydrometric boat
hydrometric bridge
hydrometric cableway
hydrometric network
hydrometric station
hydrometry
hydromica
hydromorphic soil
hydro-motor
hydron
hydron and hydride
hydroncus
hydronephrosis
hydronic
hydronic balancing in water system
hydronic power unit
hydronics
hydronitric acid
hydronium ion
hydrooptics
Hydropedology
hydro-percussive tools
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更新时间:2026/1/21 0:04:23