【电】 a-b power pack
armour; first; nail; shell
【医】 carapace; concha; conchae; helo-; nail; onycho-; onyx
second
【建】 acetonitrile; ethane nitrile
electrical source; power source; power supply
【计】 power source; power supply; PS; supply power
【化】 current source; electric source; power source; power supply
supply source