1)parallel edge,平行棱2)parallel splitting prism,平行分束棱镜3)coaxial and parallel conducting surfaces of a frustum of a prism of regular polyhedron,同轴平行正棱台面4)collimator prism,准直仪棱镜;平行光管棱镜5)knife edge,支棱(天平)6)horizon prism,地平棱镜
用法例句
New design of turning composite parallel splitting prism;
