求翻译：我分离出51株放线菌从不同的四个土壤样品中。依据菌落特征，我分离和筛选出8株典型放线菌菌株从他们之中，对其进行16S rDNA PCR扩增与测序，并对其生理生化特征及系统分类地位进行了研究。结果表明，是什么意思？

I isolated 51 actinomycetes from four different soil samples. Based on colony characteristics, Isolation and Screening of the eight typical strains of actinomycetes from them, be of 16S rDNA PCR amplification of and sequencing, and its physiological and biochemical characteristics and classification

I split the actinomycetes strains from 51 different 4 soil sample. Based on Colony characteristics, and I separated and filters out the 8 plants from their typical actinomycetes strains, 16 of them S rDNA PCR augmentation and sequencing, and its physiological, biochemical characteristics and system

I separate 51 ray fungis from the different four soil sample.Based on the colony characteristic, I separate and screen 8 typical ray fungi strains from them, carries on 16S rDNA PCR to it to expand increases with measures the foreword, and has conducted the research to its physiological biochemistry

I split off 51 from four different strains of Actinomycetes in soil samples. According to the colony characteristics, isolation and I filter out 8 typical actinomycete strains from among them, to 16S rDNA PCR amplification and sequencing, and physiological and biochemical characteristics and system

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