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Arbor Day
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Arbor Day
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Arbor Day
植树节
一些国家以法律规定宣传保护树木,并动员群众参加以植树造林为活动内容的节日。按时间长短可分为植树日,植树周或植树月,总称国际植树节,通过这种活动,激发人们爱林,造林的热情。
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electric dynamometer
electric energy
electric energy forecasting
electric energy measurement
electric energy measuring technology
electric energy storage heating
electric equilibrium
electric equipment of rural power networks
electric fence
electric field
[electric] field breakdown
electric field breakdown
electric field drift
electric field exploration
electric field intensity
electric field line
electric field mill
electric field modification
electric field of spherical electrode
electric field scanning
electric field strength
electric field strength, electric field intensity
electric field strength sensor
electric fish barries
electric fishing
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