Testing VD pathogen through PCR may efficaciously prevent, cure and control VD.利用PCR技术检测性病病原体,可有效的预防, 治疗和控制性病.Results In those pathogen there 52 % is Gram - positive bacteria, there 48 % is Gram - negative bacteria.结果致病菌...
The electronic and printing unit has annual sales of about $80 million.电子印刷部门每年销售额约为8,000万美元。His brother ran a printing and publishing company.他哥哥经营了一家印刷出版公司。Men traditionally monopolized jobs in the printing industry.在传...