spherical pyramid是什么意思

用法例句

Reasonably using a sphere-prism and its combination,optical system is changed small size,less weight,few element,compact structure and better imaginary quality.

合理使用球面棱镜及其组合可以使光电仪器尺寸小、重量轻、元件少、结构紧凑、成像质量好。