The porcine parvovirus(PPV)HZ-9 strain isolated in the study was purified from infected porkling kidney cell cultures by high speed centrifugation with polyethylene glycol precipitation and CsCL quilibrirm density centrifugation.是什么意思_The porcine parvovirus(PPV)HZ-9 strain isolated in the study was purified from infected porkling kidney cell cultures by high speed centrifugation with polyethylene glycol precipitation and CsCL quilibrirm density centrifugation.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句