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Arbor Day
释义
Arbor Day
Encyclopedia
农学
林业
释
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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lead acetate
lead acetate; sugar of lead
Lead-acid battery
lead acid battery
lead-acid battery
lead acid storage battery
lead-acid storage battery
lead alkali metal alloy
lead alloys for lead-acid battries
lead and zinc flotation
lead angle method
lead arsenate
lead azide
lead bath quenching
lead battery metal
lead beam
lead bearing steel
lead-bismuth cooled reactor
lead bullet
lead carbonate basic
lead carbonate, basic
lead carbon battery
lead castle
lead castle; lead cave
lead cave
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