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Bacillus sp. probiotic supplementation diminish the Escherichia coli F4ac infection in susceptible w
Background:Probiosis is considered a potential strategy to reduce antibiotics use and prevent post-weaning diarrhea (PWD......
采用Al-Mg-Sc-Zr焊丝为填充材料对A1-Mg-Sc合金薄板进行手工非熔化极惰性气体保护焊（TIG焊），并对焊接接头进行350℃下保温1h的焊后热......
