apical网名什么意思

　　Flowers are differentiated from a few cells on the stem apical meristem of a plant.

　　花由茎顶分生组织的少数细胞分化而来。

　　They are located in tissues (the apical meristems) at the growing points of roots and stems.

　　它们位于根和茎的生长点组织（顶端分生组织）中。

　　Apical positioning and root canal measurement are the key to the success of the toot canal treatment.

　　根尖定位和根管长度测量是根管治疗术是否能够成功的关键。