The end of the hole is hemispherical.小孔端面成半球状.Smooth hemispherical embayments by the intergrowth towards the center are not uncommon.由于向心内生长而形成半球状弯陷的情况是很常见的.The engine has hemispherical or cross flow combustion chambers....
Smooth hemispherical embayments by the intergrowth towards the center are not uncommon.由于向心内生长而形成半球状弯陷的情况是很常见的.The end of the hole is hemispherical.小孔端面成半球状.The engine has hemispherical or cross flow combustion chambers....