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Tiān-chû hòng-siā

Wikipedia (chū-iû ê pek-kho-choân-su) beh kā lí kóng...
(Tùi Tiān-chû hok-siā choán--lâi)

Tiān-chû hòng-siā (Eng-gí: electromagnetic radiation) sī hòng-siā-sèng ê lêng-liōng, keng-kòe it-tēng ê tiân-chû kòe-têng sek-hòng.

Tiān-chû-phohttps://www.facebook.com/share/p/1JmMyHqU8k/-tat tiān-chû hòng-siā hiān-siōng ê chi̍t khoán hong-sek.