Micromorphological characters of the seeds of Apocynum venetum L.and Poacyunm hendersonii (Hook.f.) Woodson were examined by stereoscope and scanning electron microscope (SEM).是什么意思_Micromorphological characters of the seeds of Apocynum venetum L.and Poacyunm hendersonii (Hook.f.) Woodson were examined by stereoscope and scanning electron microscope (SEM).在线翻译_英语_读音_用法_例句