In fact, 24 per cent of our galaxy elemental mass consists of helium, which makes it the second most abundant element in our universe.
事实上，银河系中24%的元素质量是由氦组成的，这使它成为宇宙中第二丰富的元素。
But the major ingredient of semiconductors is silicon, the second most abundant element on earth.
但是半导体的主要成分是硅，一种地球上含量第二丰富的元素。
The Hiper project would use two lasers to produce power from seawater and lithium, an abundant element.
欧洲高功率激光能源计划(theHiperproject)将用两束激光发电，原料是海水和锂，后者是一种含量丰富的元素。
Hydrogen is the most abundant element in the universe and is a major component of giant planets such as Jupiter and Saturn.
氢是宇宙中分布最为广泛的元素，它是类似于木星和土星这样的巨行星主要的构成成分。
Oxygen is the third most abundant element in the cosmos, after hydrogen and helium.
氧是宇宙中第三丰富的元素，仅次于氢和氦。
Though only the ninth most abundant element on Earth, it represents about 75% of all matter in the universe.
虽然氢在地球上的丰度只占第九位，但占宇宙中所有物质质量的75%。
Though only the ninth most abundant element on Earth, it represents about 75% of all matter in the universe.
虽然氢在地球上的丰度只占第九位，但占宇宙中所有物质质量的75%。
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