The forced contact tests at 54mg/m2 showed that KT50 was 6.2 min for Periplaneta americana and 6.0 min for Blattella germanica.是什么意思_The forced contact tests at 54mg/m2 showed that KT50 was 6.2 min for Periplaneta americana and 6.0 min for Blattella germanica.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句