English translation for "bifocal chord of a quadric"

二次曲面的两焦点弦

Related Translations:

bifocal:  adj.1.【物理学】双焦点的。2.(望远镜等)远近两用的。3.有二重观点的。短语和例子a bifocal view 双重观点。n.〔pl.〕 双光眼镜，远近视两用眼镜；双焦点透镜。

bifocal segment:  双焦面

bifocal tube:  双焦点管

bifocal ophthalmoscope:  双焦点检眼镜

bifocal slasses:  双焦点眼镜

pantoscopic bifocal:  全视眼镜

bifocal lens:  复焦点透镜双焦点透镜双焦镜双焦距透镜

bifocal glass:  双焦玻璃双焦点眼镜双焦眼镜 玻璃, 双光眼镜 玻璃

bifocal spectacle:  双焦眼镜，双光眼镜

fused bifocal:  熔合双焦点透镜

Similar Words：

"biflow filter" English translation, "bifluoride" English translation, "biflux" English translation, "bifma" English translation, "bifocal" English translation, "bifocal contact lens" English translation, "bifocal demand pacemaker" English translation, "bifocal eyeglasses" English translation, "bifocal glass" English translation, "bifocal glasses" English translation