大家在查： climbers 出多种 protrude 灵动 Cameroon robe 一马当先 时辰 snagging sequentially

helium

美 [ˈhiliəm]英 [ˈhiːliəm]
  • n.氦；氦气
  • 网络食品添加剂氦；高纯氦；氦元素

heliumhelium
权威英汉双解英-汉英-英网络释义

helium

n.

氦

相对原子质量_百度百科 ... hydrogen 氢 helium 氦 lithium 锂 ...

氦气

吸氦气(Helium)会唔会对身体有害?我见有d外国既卡通配音员会吸Helium令自己把声变得卡通化，会唔会上瘾架？

食品添加剂氦

美国FDA 21 CFR 第184部分GRAS物质 -... ... §184.1351 食品添加剂黄芪胶（ Gum tragacanth） §184.1355 食品添加剂氦（ H…

高纯氦

atomic - CAS号查询 ... 钠; sodium; 高纯氦; Helium; 钒; Vanadium; ...

氦元素

氦元素（Helium）下面数字和元素符号各表示什么意义?2S、3H、4Cu、Ag

液态氦

液态氦(helium)：沸点4.2°K，为主要的冷却剂。 ※优点：磁场强度高＞4T、磁场均匀度好、电费少、速度快、讯杂比(SNR)高。

氦原子

已知最小的原子是氦原子(helium), 半径在30pm左右[5].一个pm(皮米)是什么概念? 一个皮米, 就是1×10^-12m[6], 是一个"埃"-Å(Å…

例句：
1
He sat down in his lawn chair. Attached to his lawn chair were 105 large helium balloons.
2
The sun is relatively young, part of a generation of stars known as Population I, which are relatively rich in elements heavier than helium.
3
4
5
6
7
8
9
10
When the helium content is less than 45%, the character of tri-mixed gas has no evident difference compared with that of argon.
11
12
13
The way these pebble bed reactors work is the helium comes in up the side and down through the pebble bed. It's not a fluidised bed.
14
They observed the oscillations of the helium as it twisted back and forth on the end of a metal rod.
15
16
Astronomers ascribed them to thermonuclear fusion of hydrogen or helium or to the sudden accretion of matter onto the star.
17
Why is america wasting its helium? and what is the metal that you were talking about I've never heard of it.
18
19
As the sun burns, the hydrogen in its core converts to helium by fusion, a process through which the nuclei of atoms meld together.
20
Betty's helium-filled aerostat, three metres across, is capable of carrying loads of a little over half a kilo.
21
22
Helium 3 is not hazardous or even chemically reactive, and it is not the only material that can be used for neutron detection.
23
An increased ADC value indicates that the helium atoms were able to travel farther during the measurement time.
24
25
The output of light and heat of the Sun requires that some 600 million tons of hydrogen be converted into helium in the Sun every second.
26
Thousands of cubic metres of helium were pumped into the towering silver canopy of His balloon.
27
That left the star with only its helium core, which was a third of the sun's diameter and bore a quarter of its mass.
28
29
Robert Richardson, a Nobel Prize winner, warns helium supplies, commonly used in balloons, will run out in 25 years.
30

大家在看

高中 中学 我兔阅读 scoops bucking 设备管理培训 企业管理培训 企业管理培训课程 6S管理培训 精益生产 企业管理培训 现场管理培训 阅读 仓库安全管理培训内容 精细化管理 企业财务管理培训 香烟价格查询 领导力 醒目造句 沙盘模拟企业经营 楚歌云 课程采购 跨部门沟通 企业绩效薪酬管理培训 OKR课程 安全生产培训

热词推荐

大家在看

异性恋 形吊灯 拓扑 man , . Facebook you after 's " a then 2006年 not 水灵灵 极度 Hussein OT what
www.peoplescck.com