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牲畜越冬存活率
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牲畜越冬存活率
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农学
牲畜越冬存活率
释
survival rate of overwintering animal
牲畜越冬存活率
春季气候回暖时(牧区以饱青期为界),牲畜存活头数与入冬存栏数比值的百分数。存栏牲畜越冬期间因寒冷、饥饿、疾病及其他因素可导致部分死亡。
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quasi-projective algebraic variety
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