"For example," says Mao, "the elements boron, carbon, oxygen, sulfur, and iodine all change into metals under high pressure, and moreover become superconductors." We are only now learning in detail how radically the physical and chemical properties of materials can be transformed by pressure.
「像硼、碳、氧、硫、碘等元素，在高壓下都會變成金屬，而且變成超導體，」毛河光說，物質的物理及化學特性會因壓力而全盤翻轉，這是一種新的科學現象。