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森林抚育间伐
释义
森林抚育间伐
Encyclopedia
农学
森林经理计划
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forest tending and felling
森林抚育间伐
在林分郁闭后直至主伐的期间,对未成熟的森林定期而重复的伐去部分林木,为保留的林木创造更好的生长环境条件,同时获取一部分木材的一种森林培育技术措施。又称抚育采伐。
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sigma-field of events
sigma-field of sets
sigma field prior to tau
sigma-field prior to tau
sigma-field prior to τ
sigma-field strictly prior to τ
sigma-finite
sigma finite measure
sigma-finite measure
sigma-finite measure space
sigma formyl complex
sigma-formyl complex
sigma-function
sigma-group
Sigma hypernucleus
sigma hypernucleus
Sigma hyperon
sigma hyperon
sigma-ideal
Sigma index method
sigma-locally finite family
sigma measure
sigma-measure
sigma meson
sigma model
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