短語詞組短語fusible element sprinkler 易熔元件灑水噴頭;易熔元件噴頭fusible e sprinkler 易熔噴頭fusible e element sprinkler 易熔元件灑水噴頭fusible solder type sprinkler head 易熔元件sprinkler fusible element 易熔元件噴頭sprinkler system fusible alloy 自動噴水用易熔合金 返回 fusible sprinkler