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入射光 / にゅうしゃこう : 1）incoming beam
入射角 / にゅうしゃかく : n 1）angle of incidence
入射光線 / にゅうしゃこうせん : n 1）incident ray
入射 / にゅうしゃ : n vs 1 1）incidence 2）injection 3）input adj-no 2 4）incident
入替 / いれかえ : io n vs 1 1）replacement 2）substitution 3）change 2 4）shunting (rail) 5）switching
入替え / いれかえ : n vs 1 1）replacement 2）substitution 3）change 2 4）shunting (rail) 5）switching
入朝 / にゅうちょう : n vs 1）visiting Japan 2）arrival in Japan
入木 / にゅうぼく : n 1）calligraphy
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入射光

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