会話トレ Drill: 電気工学 Electrical engineering, Mathematics
電荷 (でんか denka)
electric charge
正電荷 (sei-denka)
positive charge
負電荷 (fu-denka)
negative charge
赤外線
infrared rays
IR
電池 (でんち)
battery
a battery
(pl) batteries
正電荷 (sei-denka)
positive charge
負電荷 (fu-denka)
negative charge
IR
a battery
(pl) batteries
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