complementary
(1)余，补
(2)补充的，互补的
(3)互助的
(4)并协的

• light source
• light source efficiency
• light source power
• light split
• light splitter
• light-splitting electrooptical system
• light-splitting optcial system
• light spot
• light spot scanning
• light step
• light stimulus
• light sum
• light-taking window
• light throughput efficiency
• light-tigth
• light-to-dark current ratio
• light-transfer
• light-transfer charcteristic
• light transmission
• light-transmission coefficient
• light-transmitting medium
• light-transmitting specimen
• light trap
• light traveling modulator
• light-triggered alarm