helium是什么意思_helium怎么读_中英文释义(含例句用法)

a very light colorless element that is one of the six inert gasses; the most difficult gas to liquefy; occurs in economically extractable amounts in certain natural gases (as those found in Texas and Kansas)

中英词源

helium 氦，氦气

来自希腊语helios,太阳。因这种元素发现于太阳光谱中而得名。

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.

词态变化

权威造句

1. Helium is a very light gas.: 氦是一种非常轻的气体。

2. Helium is a gas used in balloons.: 氦是一种用于气球的气体.

3. Unlike helium - 4, it cannot be produced by radioactive decay.: 与氦 - 4不同之处是, 氦-3不能由放射性衰变产生.

4. The helium - 3 apparently became trapped when the earth was formed.: 显然,当地球形成时,氦 - 3就被圈闭了.

5. After hydrogen, the atom with the simplest structure is that of helium.: 在氢元素之后, 氦的原子结构最简单.

近反义词

helium cycle 氦循环

helium thermometer 氦温度计

helium pressurization 压缩氦挤压

helium star 氦星

helium tank 氦气瓶

helium burning 氦燃烧

helium syncope 氦晕厥

helium nucleus 氦核

helium dating 氦年代测定法...

helium speech 氦语言

helium injection 通氦

相似短语

helium dating 氦年代测定法

helium ship 氦气艇

helium thermometer 氦温度计

neutral helium 中性氦

radiogenic helium 放射成因氦

helium detector 氦检测器

helium flash 氦闪

helium gas 氦气

helium injection 通氦

helium lamp 氦灯

单词分析

暂无,等待补充.

记忆方法

1. hel- / heli- "sun" + -ium.
2. 因为该元素最初是在日食期间从太阳光谱中探测出来的，因此就取了这个名字，-ium 本是用于金属元素的后缀，由于该元素最初被认为是一种碱金属，所以就使用了这个后缀。

helium是什么意思，helium怎么读

helium基本信息

英英释义