他的辅导教师发现了他在阅读和写作方面进步的迹象。His remedial teacher sees signs of progress in his reading and writing.他们将集中教授阅读、写作和算术基础知识。They will concentrate on teaching the basics of reading, writing and arithmetic.他能模仿大多数自己崇拜的偶像的讲话和写作风格。He...
NAA或6 - BA会引起马铃薯叶肉原生质体的褐化,但二者互作时却又抑制了原生质体的褐化.NAA or 6 - BA could cause the browning of mesoplyll protoplasts of potato.结果表明:培养基pH6.5或培养温度20℃时外植体褐化率最低.The browning rate was the lowest at pH 6.5 or 20℃.多酚氧化酶 ( PolyphenolOx...