helium
英 ['hi?l??m]
美 ['hil??m]
助記提示
1. hel- / heli- "sun" + -ium.
2. 因為該元素最初是在日食期間從太陽光譜中探測出來的，因此就取了這個名字，-ium 本是用于金屬元素的后綴，由于該元素最初被認為是一種堿金屬，所以就使用了這個后綴。
中文詞源
helium 氦，氦氣來自希臘語helios,太陽。因這種元素發現于太陽光譜中而得名。
英文詞源
- helium (n.)
- 1868, coined from Greek helios "sun" (see sol), because the element was detected in the solar spectrum during the eclipse of Aug. 18, 1868, by English astronomer Sir Joseph N. Lockyer (1836-1920) and English chemist Sir Edward Frankland (1825-1899). It was not actually obtained until 1895; it was assumed before that to be an alkali metal, hence the ending in -ium.
雙語例句
- 1. Helium is a very light gas.
- 氦是一種非常輕的氣體。
來自柯林斯例句
- 2. Helium is a gas used in balloons.
- 氦是一種用于氣球的氣體.
來自《現代漢英綜合大詞典》
- 3. Unlike helium - 4, it cannot be produced by radioactive decay.
- 與氦 - 4不同之處是, 氦-3不能由放射性衰變產生.
來自英漢非文學 - 科技
- 4. The helium - 3 apparently became trapped when the earth was formed.
- 顯然,當地球形成時,氦 - 3就被圈閉了.
來自英漢非文學 - 科技
- 5. After hydrogen, the atom with the simplest structure is that of helium.
- 在氫元素之后, 氦的原子結構最簡單.
來自辭典例句