x
uploads/dewar.jpg

dewar n.迪尤爾〔姓氏〕。

dewar vessel

In this experiment , the quantity change of partial pressure of main elements is given by longtime dynamic measuring of metal dewar exhausting with quadrupole mass spectrometer ( qms ) , the results show that exhausting technology influences outgassing of dewar vacuum vessel , this paper gives the theory , equipment , method , data and disturb fators , we also give primary investigation how the main gases affect the vacuum integrity of dewar and point out the possible ways which can be applied to present technology 摘要實驗研究用四極質譜儀對金屬杜瓦排氣進行長期動態監測,跟蹤內部主要氣體成分的分壓強的大小變化,得出排氣工藝對杜瓦內表面放氣量大小的影響,介紹了實驗的原理、裝置、方法、數據和干擾因素,對影響杜瓦真空度的主要氣體成分進行了初步研究,提出改進杜瓦排氣工藝的可能方向,對工藝處理具有實際意義。

The paper mainly consider the followings : the performance parameter determination of cryopump , heat load determination and heat transfer of large cryopanel , reasonable distribution of heat load , the condition for construct steady flow in small vertical circle pipeline , balance condition for gas and liquid two - phase flow in the connection pipe between cryopanel and dewar , the safety of cryopump 文中探討了低溫泵性能參數的確定;大抽速低溫抽氣面的熱負載的確定及合理分配;冷凝面上豎直圓管內受熱建立穩定流動的條件;冷凝面與杜瓦間的連接管道內氣液“雙相流動”的平衡條件;低溫泵系統運行的安全問題。

The evacuated tube is similar to a conventional dewar flask and consists of two borosilicate glass tubes , a glass with high chemical and thermal shock resistance . the outer side of the inner tube is coated with a sputtered solar selective surface 真空玻璃管和傳統意義上的真空玻璃細頸瓶是相似的,它由兩層高強度耐沖擊性的高硼硅玻璃組成,內管外壁是磁控濺射選擇性吸收涂層。

The paper mainly introduces the structure of dewar liquid nitrogen bottles auto filling system , the work theory and the features of related hardware , and briefly describes functions of the software 摘要文章介紹用于高純鍺探測器的杜瓦液氮瓶自動灌裝系統的組成結構、工作原理以及相關硬件的選取及特點,并簡要說明軟件實現的功能。

The gyroscope accembly is placed inside lead bags , which in turn are placed inside a large cryogenic container called a “ dewar “ holding about 1 , 5000 litres of liquid helium 科學家把回轉儀系統裝在鉛袋內,再放入一個低溫真空瓶中。真空瓶盛載著約1 , 500公升的液態氮,把鉛袋冷凍至差不多攝氏零下271度。

A typical transfer line for dewars is connected to a bayonet that provides a means of using product vapor pressure build - up or an external pressure source to remove the liquid 用于杜瓦瓶的典型的轉移管連接到卡口上,利用產品積累的蒸氣壓或外部的壓力源來取出液體。

Thermal load is a important parameter vacuum quality of detector / dewar which decides cooperation performance of detector / dewar and cooler 摘要熱負載是決定探測器杜瓦組件與制冷機適配性能的重要指標之一,也是間接判斷探測器杜瓦元件內部真空度的手段。

According to package characteristics of long linear hgcdte irfpa detector , difficulties of the metal split micro dewar manufacture are discussed in the paper 摘要針對長線列碲鎘汞紅外焦平面探測器封裝的特點,文章討論了分置式微型杜瓦研制的難點。

The ultra helium dewars are designed and built for reliable transport . they are light , maneuverable and durable , while providing superior thermal performance 專為液氦的可靠運輸設計和制作,具有自重輕易操作高可靠性及超級絕熱性能等特點。

The ultra helium dewars controls are conveniently located on the top , with nesting fill couplings to accept various standard transfer line sizes 超級深冷液氦杜瓦罐的控制閥組及接頭安裝在頂部,非常便于操作,并可連接各種標準尺寸的軟管。

Treatment of complete dislocation of acromioclavicular joint with the modified dewar operation and postoperative recovery of joint function 手術治療肩鎖關節完全脫位及術后的關節功能恢復

1842 sir james dewar , scottish physicist and chemist and inventor of the vacuum flask , was born in fife 詹姆士德華爵士,蘇格蘭物理學家和化學家,保溫瓶的發明者,于1842年出生于法福。

1842 sir james dewar , scottish physicist and chemist and inventor of the vacuum flask , was born in fife 1842年,蘇格蘭物理學家、化學家、真空管發明人詹姆斯.德沃爾爵士出生于法夫。

Thermal stress analyses and comparison of triangular and trapezoidal threaded - adhesive joints applied in non - magnetic dewar 無磁杜瓦中三角形和梯形螺紋粘接接頭的熱應力比較

A liquid transfer line is used to safely remove liquid product from dewars or cryogenic liquid cylinders 液體轉移管用于從杜瓦瓶或低溫液體鋼瓶中安全地提取液體產品。

The types of containers in use include the dewar , cryogenic liquid cylinder , and cryogenic storage tank 使用中的容器類型包括杜瓦瓶、低溫液體鋼瓶和低溫儲存罐。

Method for measurement and test of parameters of 4n infrared focal plane detector dewar assembly 4n紅外焦平面探測器杜瓦組件參數.測試方法

Dewar vacuum flask 杜瓦期瓶

Thermal loss analysis for the dewar assembly coupling with the micro - stirling cryocooler 微型斯特林制冷器與杜瓦瓶組件耦合漏熱分析