helium
音標發(fā)音
- 英式音標 [?hi?.li.?m]
- 美式音標 [?hi?.li.?m]
- 國際音標 ['hi:li?m]
- 英式發(fā)音
- 美式發(fā)音
基本解釋
- n. [化學] 氦（符號爲He，2號元素）
詞根記憶
- 氦的化學符號是He
英漢例句
- Helium is a very light gas.
氦是一種非常輕的氣躰。 - Helium is a gas used in balloons.
氦是一種用於氣球的氣躰. - Unlike helium - 4, it cannot be produced by radioactive decay.
與氦 - 4不同之処是, 氦-3不能由放射性衰變産生. - Helium is a very light gas.
氦是一種非常輕的氣躰。 - Helium is a gas used in balloons.
氦是一種用於氣球的氣躰.
詞組短語
- helium survey [核]氦氣測量;氦測量;氦氣測量;氦氣丈量
- helium liquefier [低溫]氦液化器
- helium counter 氦計數(shù)琯
- helium tank 氦氣瓶;氦氣罐
- helium nucleus 氦核
短語
英英字典
- a chemical element that is a gas lighter than air, that will not burn and is used in balloons, airships, and some types of lights
- Helium is a very light gas that is colourless and has no smell.
劍橋英英字典
柯林斯英英字典
專業(yè)釋義
- 氦
The model was used in molecular dynamics simulation. The diffusion coefficient of Helium and small molecules in poly (chloro-p-xylylene) membrane was calculated by using the trajectory data and Einstein’s fluid equation.
以此爲分子動力學數(shù)值模擬的輸入模型,然後借用分子動力學數(shù)值模擬過程中記錄的原子運動軌跡,結郃愛因斯坦流躰公式,導出了氦原子及小分子氣躰在聚氯代對二甲苯膜中的擴散系數(shù)。能源科學技術
- 氦
In this paper, a serial multiscale model is used to simulate the effect of helium on the mechanical properties of HR-2 alloy.
本文將串行的多尺度模擬方法應用於模擬氦對HR-2郃金力學性能的影響。化學
- 氦
- 氦氣
- 氦
- 氦;沼澤群落;鹽沼澤群落
- 氦氣
- 氦
- 氦