|
|
| 1. | Sodium is the sixth most abundant element in the earth's crust. |
| 钠是地表中含量第6丰富的元素。 |
|
|
| | |
| 2. | odorless tasteless nonflammable diatomic gas; constitutes 28 percent of the atmosphere by volume; the most abundant |
| 一种非金属二价元素，通常为无色无嗅无味、不易燃烧的二原子气体，体积占大气的%，地壳中含量最多的元素。 |
|
|
| | |
| 3. | The lightweight gas, the most abundant element in the universe, can be made from water. |
| 这种重量很轻的气体是宇宙中最丰富的元素，它能够从水中制成。 |
|
| -- 来源 -- 时文4 - P_shiwen_jijiangdaoqingjingji |
好评(10) |
差评() |
|
|
| | |
| 4. | a tetravalent nonmetallic element; next to oxygen it is the most abundant element in the earth's crust |
| 一种四价非金属元素，地壳中含量仅次于氧，见于粘土、长石、石英和沙中，在晶体管中用作半导体。 |
|
|
| | |
| 5. | "Iron is the most used and cheapest metal, the second most abundant metal and fourth most abundant element |
| 铁是最常使用和最便宜的金属,在地壳中,其丰度在金属中居第二位,在所有元素中排在第四位。 |
|
|
| | |
| 6. | a white metallic element that burns with a brilliant light; the fifth most abundant element in the earth's |
| 一种白色的金属元素，燃烧时放出亮光，地壳中含量居第五位的元素，大部分动物植物的重要组成部分。 |
|
|
| | |
| 7. | a clean energy source that also happens to be the most abundant element on the planet. |
| 还有一种更吸引人的选择是氢气??一种地球上蕴含量最丰富的干净能源。 |
|
| -- 来源 -- 空中美语-科普篇-怒发冲冠为哪桩？ - High Hopes for Hydrogen |
好评(10) |
差评() |
|
|
| | |
| 8. | "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%。氢过去用于填充飞船;无味的氦已取代它。 |
|
|
| | |
| 9. | normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant |
| 一种非金属单价元素，通常为无色无味、极易燃烧的双原子气体，宇宙中最简单、最轻、最丰富的元素。 |
|
|
| | |
| 10. | A very soft, silvery white metal, the sixth most abundant element on Earth, it occurs mainly as halite |
| 钠:碱金属族化学元素，化学符号Na，原子序数11。钠是很软的银白色金属。其含量在地球上占第6位，通常以石盐形式存在，不以单体存在于自然界中。 |
|
|
| | |