一种仙人掌类植物,尤指仙人球属和刺仙人掌属,有多刺的茎,成不分支的球状或圆柱状。
Any of several cacti, especially in the genera Ferocactus and Echinocactus, having unbranched, globular to columnar, ribbed spiny stems.
叶互生,无柄,圆柱状,肉质,基部扩大的,先端钝或具芒;叶腋束状具柔毛。
Leaves alternate, sessile, terete, fleshy, base expanded, apex obtuse or aristate awned; leaf axil fascicular pilose.
当扫描层面和它们的长轴平行时,肺动脉分支和支气管呈圆柱状或远端变细分叉,这取决于它们在扫描层面内的长度和走行。
When imaged along their axis, bronchi and vessels should appear roughly cylindrical, or show slight tapering as they branch, depending on the length of the segment that is visible.
当扫描层面和它们的长轴平行时,肺动脉分支和支气管呈圆柱状或远端变细分叉,这取决于它们在扫描层面内的长度和走行。
When imaged along their axis, bronchi and vessels should appear roughly cylindrical, or show slight tapering as they branch, depending on the length of the segment that is visible.
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