Petroleum aether,acelic aster,acet and ethanol extract of Melia azedarach with different dose was used for repellency and contact tests against Sitophilus zeamais,and repellent rate and correction mortality were calculated.是什么意思_Petroleum aether,acelic aster,acet and ethanol extract of Melia azedarach with different dose was used for repellency and contact tests against Sitophilus zeamais,and repellent rate and correction mortality were calculated.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句