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annual ring
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annual ring
Encyclopedia
理学
〔植物形态与结构〕
释
annual ring
年轮
温带及其以北地区生长的树木通常在每年的一个生长期中,由维管形成层产生一圈次生木质部,在木材横切面上呈现明显的同心轮状结构。
Biology
annual ring
年轮
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South African Raid on Gaborone
South African Revisionist Historiography
South Africans
South Africa Plateau
South American climber
South American Common Market
South American common market
South American hydropower resources
South American Indian languages
South American leaf blight of rubber tree
South American shield
South America temperate grassland
Southampton
Southampton Island
South and North Jixiang Temple
South Asia
South Asian association regional cooperation
South Asian Subcontinent
South Asia race
South Asia Subcontinent
South Atlantic Anomaly
south Atlantic anomaly
South Atlantic Ridge
South Australian Film Corporation
South Australia, State of
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