[der] 球锥体。
spherical sector, sector of a sphere
[der] 球锥体。
spherical sector, sector of a sphere
[der] 体。
spherical sector, sector of a sphere
[der] 锥体。
spherical sector, sector of a sphere
[der] 球锥体。
spherical sector, sector of a sphere
[der] 。
spherical sector, sector of a sphere
[der] 球锥体。
spherical sector, sector of a sphere
[der] 。
spherical sector, sector of a sphere
[der] 球。
spherical sector, sector of a sphere