metamorphism [metə'mɔ:fɪzəm]

例句:

• Danba area has undergone multiperiod deformation, metamorphism and magmatism since Mesozoic time.
  丹巴地区自中生代以来经历了多期的变形 、 变质和岩浆作用.
  
• The process of alternating solid rock masses is called metamorphism.
  固体岩体变换的过程即所谓变质作用.
  
• The metallogenesis is close related with the Caledonian - Indosinian regional metamorphism.
  加里东期~印支期区域变质作用与成矿密切相关.