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单词
笼养蛋鸡疲劳症
释义
笼养蛋鸡疲劳症
Encyclopedia
农学
钙磷代谢紊乱
释
cage layer fatigue
笼养蛋鸡疲劳症
由于饲料中维生素D及钙磷不足或钙磷比例严重失调所致的营养代谢病。又称笼养蛋鸡骨质疏松症。
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children's activity area
children's activity room of museum
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Children's Laureate
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Children's Primer Book Series
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Children's Publishing House
children's reading room
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