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草原旱灾
释义
草原旱灾
Encyclopedia
农学
草原旱灾
释
drought disaster
草原旱灾
因长期降水量较少,致使土壤水分减少,牧草体内及根部缺少水分,导致牧草不能正常返青或影响牧草正常生长和发育,使得草原生物量减少、生物多样性降低,以及河流缺水和人畜饮水受限,使大量家畜掉膘甚至死亡,造成重大经济损失的灾害,属于农业干旱的范畴。
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laser leveling
laser leveling machine
laser level meter
laser life off
laser lift-off equipment
laser light
laser lighting
laser light scattering
laser linewidth
laser lithotripsy
laser locator
laser locking
laser low temperature fluorescence spectrometry
laser machining
laser master oscillator
laser material
laser materials
laser-measure length
laser measurement technique for geometrical metrology
laser medicine
laser medium
laser melting deposition or laser cladding deposition
laser memory
laser memory circuit
laser metallization
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