permanent amagnet focusing
永磁聚焦

• recording lamp
• recording medium
• recording optical tracking instrument
• recording phase hologram
• recovery
• recovery of spectrum
• recovery photodiode
• recovery time
• recruitment services and executive search
• recrystalization
• rectangle
• rectangle function
• rectangular
• rectangular aperture
• rectangular axis
• rectangular Cartesian coordinate
• rectangular coordinate
• rectangular coordinate system
• rectangular disk laser
• rectangular filter
• rectangular guideway
• rectangular hyperbola
• rectangular laser
• rectangular mirror
• rectangular prism