Flying boat is a controllable aircraft that can flying in the air, the flotage provided by the helum - filled bag inside the flying boat can support the boat and it s load in the air, motor pushing it forward ; the direction is guided by the device on it s tail, going down of the boat is made by escaping the gas inside, it can rise or fall straightly or stay in the air, no necessity of special site for taking off
飛艇是一種可操縱的浮於空中的飛行器。在飛行中主要依靠內部充滿
氦氣的氣囊提供的浮力，將飛艇及其載荷支持在空中，發動機為其提供前進的動力，
通過操縱尾翼上的升降舵和方向舵控制飛艇的俯仰和方向運動，飛艇的下降是
通過排放氣來實現的。飛艇可以垂直起降空中懸停，不需要有專用設備的起降場。
General specification of he - ne laser medical equipment
氦氖激光治療機
通用技術條件
Nuclear energy. nuclear fuel cycle technology - waste - non - intrusive, non - destructive determination of the tritium activity of a package containing tritiated waste by measurement of helium - 3 leakage from the package
核能.核燃料循環技術.廢棄物.
通過從封殼里泄露出來的
氦- 3的測量對含氚廢棄物封殼的氚放射性進行非侵入和非破壞性測量
The general specification of he - ne laser medical equipment
氦氖激光治療機
通用技術條件
The general specification of he - ne laser medical instrument for ilib
氦氖激光血管內照射治療儀
通用技術條件
Liquid helium cryocondensation pump has great advantages in large pumping speed, working pressure range and high ultimate pressure, etc. it ' s more excellent than any other vacuum pump. it can meet the vacuum requirement of nbi and can improve the transportation efficiency. the development of neutral beam injection ( nbi ) system in the world, the structure of nbi system used on the ht - 7 device of asipp was introduced in the thesis
液
氦低溫冷凝泵是利用低溫面對氣體有強吸附能力的原理，實現抽氣的真空獲得設備，它具有抽速大、工作壓強范圍寬、極限真空度高等一系列優點，是普
通真空設備無法比擬的，作為中性束注入系統的主抽泵，它能滿足中性束注入系統對大抽速的要求，提高中性束的傳輸效率。
The star used to be like the sun, a “ main sequence ” star that burns hydrogen by nuclear fusion, producing helium
該恆星和太陽一樣是一顆主星序恆星，氫元素
通過核裂變生成
氦元素。
The fluid flow along the cooling passage of scq magnets were compared for both supercritical helium cooling and subcooled liquid cooling. based on the analyses, the supercritical helium cooling scheme was suggested
模擬冷卻
氦流在scq磁體
通道中的流動情況，比較了超臨界
氦流和過冷
氦流這兩種冷卻方式對流道中熱點溫度的影響，為該磁體冷卻方式的確定提供了依據。
This paper presents the effects of some features on the productivity of raw c60 materials, such as distance and approaching speed of electrodes, helium partial pressure and arc current etc. then we separate and purify the raw materials and obtain pure solid c60 of 99. 9 % and compare the purification efficiency and effect of different fluxion phase and fixed phase and discuss the effects of the experimental conditions, such as the depositing speed, the type of the substrate, the surface structure of the substrate and the temperature of the substrate. finally, we use xps, afm, ultraviolet, infrared and raman to analyze the component, structure and feature of the films qualitatively and quantitatively
本文首先研究了
氦氣分壓、弧電流大小、電極間距以及電極推進速度等實驗條件對制備c _ （ 60 ）粗品產率的影響；接著選用柱色譜法分離提純得到了純度大於99 . 9的c _ （ 60 ）固體，比較了不同流動相和固定相的提純效率和效果；然後採用自己改進后的真空鍍膜機，利用電阻式加熱蒸鍍方法，得到了純c _ （ 60 ）薄膜和不同摻雜比的銀摻雜薄膜；探討了沉積速率、襯底種類、襯底表面結構以及襯底溫度等實驗條件對薄膜結構的影響；最後
通過xps ， afm ，紫外，紅外，拉曼對薄膜的成分、結構和特性作了定性和半定量分析。
Helium is also lighter than air, but it costs a lot of money. so balloons were ( and are ) usually filled with hydrogen
氦也是一種比空氣輕的氣體，但是它太昂貴，因此氣球
通常都是裝滿氫氣的。
Vessels and piping should be designed to american society of mechanical engineers ( asme ) specifications or the department of transportation ( dot ) codes for the anticipated pressures and temperatures
用於
氦設施的容器和管道系統要根據預期的壓力和溫度按照美國機械工程師協會（ asme ）或交
通部（ dot ）的規定來設計。
The simulating temperature values at collapse are almost equal to each other for different gas bubbles at the threshold pressures, however, when the pressure above the threshold one, the sl mechanism satisfies the bremsstrahlung
通過對含有單一氦、氬、氪的氣泡進行聲致發光閾值研究，發現隨著氣體原子質量的增加，氣泡的聲致發光閾值降低。
