The growth curve of Dentrobium cell showed "s" type when the protocorm were cultured on solid media or with liquid suspension way.
固体培养和液体悬浮培养的石斛原球茎细胞生长曲线大致呈“S”型。
3
It 's known that, Xihoumen cross-sea bridge's main bridge is the first split type steel box girder suspension bridge in the world, and mainly spans 1650m.