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种鸡本交笼饲养
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种鸡本交笼饲养
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鸡饲养方式
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colony cages for layer breeders
种鸡本交笼饲养
将种公鸡和种母鸡按照一定比例混养于同一特殊笼具内,用鸡只本能的自然交配代替人工授精获取种蛋的养殖模式。
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pipeline automation and control design
pipeline auxiliary facilities design
pipeline bends
pipeline biofilm
pipeline bridge
pipeline chaining
pipeline coating construction
pipeline commissioning
pipeline communication
pipeline computer
pipeline construction
pipeline container maintenance
pipeline control peg
pipeline corridor
pipeline corrosion and protection
pipeline corrosion protection
pipeline crossing construction
pipeline crossing engineering
pipeline current map
pipeline data hazard
pipeline defect detection
pipeline ditch or pipeline trench
pipeline efficiency
pipeline emergency repair
pipeline emergency rescue
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