外生的

Single cancellous osteomas, unlike exostosis, are a relatively rare lesion in the external auditory canal.

单一骨瘤，不像外生骨疣，是一个外耳道较少见的病灶。

The two major groups of mycorrhizal fungi are the ectotrophic and endotrophic types.

主要的菌根真菌有两种：内生型和外生型。

There are three microscopic organizational modes of cyclic economy in the perspective of supply chain, i.e., green supply chain, endo-symbiosis supply chain and exogen-symbiosis supply chain.

摘要基于供角度提炼了循环经济的三种微观组织模式：绿色供、外生共生体型供和内生共生体型供。