Helium-3 (helium-3), sī helium ê tông-uī-sòo tsi-it, guân-sòo ê hû-hō3He. I-ê guân-tsú-hu̍t iû nn̄g-liap tsit-tsú hām tsi̍t-lia̍p tiong-tsú sóo tsoo-sîng--ê. Helium-3 mā-sī tsi̍t-ê ún-tīng ê tông-uī-sòo. I-ê siong-tuì hong-tōo (natural abundance (NA)/豐度) sī 0.000137%.[1] It-puann siong-sìn, gue̍h-kiû piáu-bīn ê piáu-gâm-siat (regolith/表岩屑) kuāñ-tio̍h tāi-liōng--ê helium-3.

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