helium-neon discharge tube
氦氖放电管

• deuterium bubble chamber
• deuterium discharge lamp
• deuterium exchange
• deuterium-labelled
• deuterium plasma
• deuteron
• devating prism
• devator
• developed curve
• developed representation
• developer
• developer fog
• developing
• developing agent
• developing bath
• developing effect
• developing pager
• developing solution
• developing stain
• developing tank
• developing trough
• development
• development fog
• development time
• devetail joint