The shape of the vertebral body has been seldom looked into, and the findings obtained show a triangular shape and hemispherical shape, supposedly owing to interpersonal variability.

很少有关于椎体外形的观察研究，研究发现有三角形和半球形两种，推测是由于个体差异所致。

youdao

The name derives from the hemispherical shape of the combustion chamber.

FORBES: The Engine That Could

The Hemi, made by DaimlerChrysler AG's Chrysler Group, is the nickname for a series of engines known for their dome-shape--or hemispherical--combustion chamber.

FORBES: Magazine Article