The cells of the integument and nucellus of some plants form perfectly normal embryos.某些植物的珠被和珠心细胞形成完全正常的胚.There are collagenous fiber in integument especially integument and the hymenopterous integument discovered by th...
The cells of the integument and nucellus of some plants form perfectly normal embryos.某些植物的珠被和珠心细胞形成完全正常的胚.There are collagenous fiber in integument especially integument and the hymenopterous integument discovered by th...
Brisk brave brigadiers brandished broad bright blades , blunderbu es , and bludgeon -- balancing them badly.敏捷而勇敢的陆军旅长们挥舞着锋利的刀剑 、 大口径前膛枪和大头短棒 ─ ─身体差点失去平衡.Whatever he said, the swift answer crushed him like a bludgeon.不论他...
Our ancient ancestors were often generous in deeming things alive.我们古老的祖先常常善意地认为物质都是有生命的.Our ancestors merely made use of their hands to change nature.我们的祖先只凭双手改造自然....our daily lives, so different from those of our ance...
It is usually found in metaxylem tracheids and vessels.经常在木质部管胞和导管中发现.Exarch Denoting a stele in which the metaxylem develops to the inside of the protoxylem.外始式:指后生木质部在原生木质部之内的中柱类型....