- a yet easier task
- a yet more difficult task
- a yet unfinished task
- a yet worse mistake
- a young animal
- a young child
- a young country
- a young family
- a young man
- a young man in a hurry
- a young manner
- a young person
- a young state
- a young tree
- a youthful cadre
- a youthful river
- a zero-zero fog
- a zigzag path
- a zone in depth
- a zone of communication
- a zone of fire
- a zone of influence
- a zoological garden
- a zoomorphic deity
- a'-dipyridyl a
- a-
- A-139
- a-b box
- a-b power pack
- a-b test a-b
- a-b toll system
- a-b toll trunk
- a-battery
- A-bomb
- a-c
- a-c bias
- a-c bridge
- a-c cemponent of plate current
- a-c circuit
- a-c circuit breaker
- a-c coupling
- a-c cycle
- a-c d-c receiver
- a-c directional overcurrent relay
- a-c dump
- a-c dynamo
- a-c erasing head
- a-c generator
- a-c hum
- a-c imrt-arc welder
- a-c machive
- a-c magnetic biasing
- a-c motor
- a-c noise
- a-c noise immunity
- a-c phase meter
- a-c plate resistance
- a-c positioning
- a-c power
- a-c power supply
- a-c receiver
- a-c reclosing relay
- a-c relay
- a-c resistance
- a-c source
- a-c time overcurrent relay
- a-c transducer
- a-c transformer
- a-c transmission
- a-c tube
- a-c.
- a-d converter
- A-denopterin
- a-display
- A-face centered lattice
- a-frame
- A-G ratio
- a-law
- a-m threshold
- a-m tuner
- a-m/f-m receiver
- a-m/f-m tuner
- a-margin
- a-n radio range a-n
- a-n signal a-n
- A-ninopterin
- a-particle
- a-peltatin
- a-scan
- a-scope
- A-stage resin
- a-supply
- A-type steel
- A-V nicking
- A-Z test
- a.
- A. B. C. diuretic
- A. B. C. method
- a. c.
- A. C. D. solution
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