ferrous
(1)亚铁的，二价铁的
(2)含铁的
(3)类铁的

• seeder
• seedholder
• seeding
• see-in-dark rangefinder
• seeking
• Seeman-Bohlim camera
• Seeman slit
• segmented glass laser
• segmented mirror
• segmented rod
• segmented rod laser
• segment gear
• segment shutter
• segregation
• Seidel aberrations
• Seidel coefficient of aberration
• Seidel eikonal
• Seidel optics
• seim-finished
• seismic exploration
• seismic wave
• seismograph
• selection
• selection rule
• selective absorption