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草场封育
释义
草场封育
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草场封育
释
grassland enclosure
草场封育
利用草场的自我更新能力,在自然条件适宜的地区,实行管护干预,去除草场所承受的压力和干扰,逐渐恢复草地生产力的一种自然恢复方式。
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rare-earth metal catalyst
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rare earth permanent magnetic material
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rare earth permanent magnetic material with low temperature coefficient
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rare-earths-cobalt perma-nent magnetic material
rare earth-sensitized luminescence materials
rare earth solvent extraction separation and purification
rare earth sulfate
rare earth synergistic extraction
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