pole
(1)极
(2)电极
(3)磁极
(4)极点
(5)棒，杆

• Keratoprosthesis
• Keratoscope
• Kerf
• kernel
• kerosene
• Kerr cell
• Kerr-cell
• Kerr-cell modulator
• Kerr-cell's constant
• KERR-CELL SHUTTER
• Kerr effect
• Kerr effet self-focuing
• Kerr's constant
• Kerr shutter
• Kettler-Drude dispersion eqution
• key
• keyboard
• key-colour
• keyer
• keying circuit
• key light
• key plate
• keysets
• key slot
• keystoen scanning