xemen.[鸟]北极鸥Xen.[化]元素氙(xenon)的符号Xenortholitha ambustarian.焦黑点尺蛾Xenortholitha latifusatan.侧黑点尺蛾Xenorhabdus neraatophila嗜线虫致病杆菌Xenococcus chaetomorphaen.硬毛异球藻xerographic color copier彩色静电复印机xerothermic organisms.干热生物Xenocypri davidi bleeker黄尾密鲴Xenorhabdus nematophilus嗜线虫致病杆菌Xenorhadbus nematophilus线虫共生菌xenohistoincompatibility异种组织不适合性, 异种组织不相容性