ʻO View Larger Image Valve kekahi o nā mea hana nui i ka ʻōnaehana hoʻomalu wai.I kēia manawa, ʻo ka hoʻohana nui ʻana o ka valve me ka ʻaila a me ke kinoea, ka mana, ka ʻenekinia kemika, ka lako wai a me ka mālama ʻana i ka wai, ka hana pepa a me ka metallurgy.Ma waena o kēlā, ʻaila a me ka hau, ka mana a me ka ʻoihana kemika ...
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