这是由于热液蚀变岩石具有较高的抗风化力的缘故.This is due to the higher weathering resistance of hydrothermally altered rock.反对热液成固的理由是铀和金有着一致的分布.Argument against a hydrothermal origin is the sympathetic distribution of uranium and gold.在所有热液矿...
本厂新推出的 防盗 保险锁,结构坚固,经久耐用.Our factory's new anti - theft safety looks are Both sturdy and duraBle.我又买了一把保险锁,以加强防贼的安全措施.I bought another safety lock as an additional insurance against thieves....