当用69-1饮水消毒剂灭活9株肠道病毒比较试验时，柯萨奇病毒B3、B5和埃柯病毒1型的耐力比其它几株病毒强。
The resistances of Cox . B_3 , B_5 and ECHO 1 were stronger than other viruses when nine enteric viruses were inactivated by 691 Drinking water-disinfectant . When the (?)
埃柯病毒