"Prior to the 20th century, high-pressure research was a blank," says Mao. Pressure, temperature, and elemental composition are considered the three dimensions of materials science, because these factors determine the nature of materials.
「高壓研究在 20 世紀以前是空白的，」毛河光說，壓力、溫度、元素成分，被稱為物質科學的三維空間，能控制、改變物質的性質。