This small, Ellipsoid, red berry grows on a bush native to Asia,
especially the Himalayan regions of China, Tibet, and Ningxia.
(2) head: subcritical pressure boilers are usually hemispherical, high pressure and ultra-high pressure boilers are usually Ellipsoid,
medium pressure boilers are relatively flat Ellipsoid, and the head is provided with manholes for installation
and maintenance of internal devices.