低真空度 的英文怎麼說
中文拼音 [dīzhēnkōngdù]
低真空度
英文
low vacuum-
With the aid of baffle movement, a technique named masking pretreatment and the method of vacuum deposition have been used to fabricate the ag - o - cs photoemissive thin films with internal field - assisted structure for the first time. the internal field - assisted photoemission characteristics of ag - o - cs thin films show that the photoelectric sensitivity is increased when the internal electric field is applied to the thin films, which indicates that the electric field has been effectively provided to the thin films by the above - mentioned internal field - assisted structure. such an enhanced photoemission is attributed to the variations in energy - band structure of ag - o - cs thin films, and which are considered to induce the lower - energy electrons to participate in the photoemission
通過掩膜預處理和擋板轉移技術的配合，利用真空沉積方法首次制備了內場助結構ag - o - cs光電發射薄膜。 ag - o - cs薄膜內場助光電發射特性測試結果表明，該方法能夠有效地實現ag - o - cs薄膜體內電場的加載與表面電極的引出，薄膜光電靈敏度隨內場偏壓的增大而上升。 ag - o - cs薄膜在內場作用下的光電發射增強現象與薄膜體內能帶結構變化低能電子參與光電發射等物理機制有關。Among various fabrication techniques of thin film, the sol - gel process has gained much interest for the preparation of pzt thin film, due to ihe advantages of good homogeneity, easy control of composition, low in - ill i reaving temperature, easy formation of large area thin films pb ( zrxti : - k ) 0 :, ( pzt ) films were prepared on the ito coated glass plates and low resistor silicon wafer in sol - gel dip - coating process associated wi di heat treatment : at different temperatures and characterized by x - ray diffraction ( xrd ) and transmission electron microscopy ( tem ). lt is shown that the pzt ferroelectric thin films with ( 110 ) preferred orientation and well - crystallized perovskite structure can be obtained after annealing at 680 ? for 30 minutes on ito substrate and at 800 " c for lornin on silicon substrate
Pzt的制備方法有很多，其中溶膠?凝膠（ sol - gel ）方法可以和集成電路（ ic ）光刻工藝相互兼容，處理溫度低，有大面積塗敷性能，能精確地控制組分，無需復雜的真空設備，成本低廉，所以對于集成鐵電薄膜電容的應用這種方法有很廣闊的前景。本文利用sol - gel技術在摻錫的in _ 2o _ 3透明導電薄膜（ ito ）襯底和低阻硅襯底上成功地制備了pzt鐵電薄膜。運用了x射線衍射， sawyer - tower電路和lcr電橋分別對薄膜的晶化溫度，結構和電學性能進行了測試。After the vacuum dry and the sphere mill, the level of agglomeration is low, the particle size is very small, spherical and the nanometer stannic dioxide powder with the aspects of good scattered nature is achieved
經真空乾燥和球磨粉碎后得到團聚程度低，粒度細小均勻，達到納米水平並具有較好分散性的球形二氧化錫粉體。When the thickness increases up to a critical value, about 30 nm, the spotty rheed pattern gradually changes to streaky pattern, and the rheed oscillation curve appears. the rheed pattern of the ultra thin lno film deposited in the relatively high oxygen pressure is streaky pattern. with pumping the oxygen pressure to the relatively low value, the streaky rheed pattern gradually changes to spotty one
我們發現在較低的真空度下，即氧分壓處於2 10 - 4pa和3 10 - 3pa之間， lno晶格中的一個o2 -將會轉移兩個電子給兩個ni3 + ，並且移動到薄膜表面形成o2被泵抽走，從而導致鈣鈦礦結構的垮塌，其相應的rheed圖樣呈現出清晰而明亮的點，表明表面為較為粗糙的三維島狀結構。Under special conditions such as low partial load / deep vacuum, unexpected high air leakage resulting in a major temperature difference ( above 10 c ) between the steam exhaust turbine temperature and all air - take off temperature measurement, the suction capacity can be improved by using 2 main ejector simultaneously
在特殊條件如局部低載荷/極端真空，不正常的熱交換，意想不到的高空氣泄漏導致的在蒸汽排氣溫度和抽空溫度測量上產生的嚴重溫差（ 10 c以上） ，用兩臺主抽汽器同時工作可以提高抽氣量。The expansion and dehiscence behavior during the vacuum reactive sintering below 660 of compact ti / al composite powders was experimentally investigated, and the reasons of expansion and dehiscence were theoretically analyzed. the method of low temperature reactive sintering was generalized, and the experiment testified the method effective. the rule of the expansion of the billets was generalized from the result of density of the billets
低溫反應燒結工藝:研究了高能球磨ti / al復合粉體在溫度低於660下真空無壓反應燒結過程中的膨脹和開裂行為，分析了產生膨脹和開裂的主要原因;並提出了能夠有效預防坯料開裂的方法;通過測定坯料在低溫燒結后的密度，總結了其體積膨脹的規律;通過x射線衍射技術分析了隨球磨時間不同，金屬間化合物的生成情況。The advantage of vacuum oven is that lower drying temperatures are used which decrease the deterioration of the dry matter.
真空烘箱法的優點為採用較低的烘乾溫度，從而減少干物質的變質。Because of drying in vacuum, it has high speed under low temperature, its dry speed has raise 2 times, save sources, and the heat efficiency is high, especially adapt to material which is heat sensitive and easy oxidized
由於是在真空下乾燥，在較低溫度下有較高速率，比一般乾燥設備速度提高2倍，節約能源，熱利用率高，特別適合熱敏性物料和易氧化物料的乾燥。Vacuum degree high vacuum ; low vacuum
真空度：高真空低真空Testing method of cryo - insulation pressure vessels vacuum measurement
低溫絕熱壓力容器試驗方法真空度測量The salt water is passed through a series of chambers which have progressively higher vacuums and lower temperatures.
鹹水流過一系列真空程度逐漸增高，溫度逐漸降低的蒸餾室。In may, the team ran tests at lower temperatures but with harder vacuums as oxygen could be extracted with less power under this condition
研究小組在五月曾嘗試在低溫但高度真空的環境下進行實驗，因為在這環境下，提取氧氣所需的能量會較少。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。If the vacuum degree of the vacuum interrupter, which is used online in a vacuum breaker, is lower than an amount of magnitude, it will lead to the vacuum breaker cannot switch off normally. this will affect and damage to the power transformer system working in order
運行中的真空開關，其真空滅弧室的真空度若低於一定數量級，就可能導致真空開關不能正常開斷電路，而影響配電系統的正常供電，這將造成極大的危害。Results of vmd experiments indicate that flux increases when feed temperature, feed rate and vacuum degree increase. but the increase of flux becomes slowly when feed rate reaches 60l. h - 1 ; flux increases with pore size rapidly, but rejection approaches zero when pore size reaches 0. 5m
實驗表明，隨進料溫度、進料流速、冷側真空度的增大，膜通量增大；但進料流速增大到60l . h - 1之後，通量隨進料流速的增長變緩；膜通量隨孔徑較快地增大，但當膜平均孔徑達到0 . 5m時，截留率迅速降低，已無實際意義。At the base of participating in the system design and debug of the dy - 500 hip - sinter low - pressure and vacuum sinter stove which is investigated by the zigong horniness - alloy ltd. this paper conclude the practice and work, according to the sense and the embed analysis, this paper including : aim at hip - sinter stove, analyse technics principle of the dewaxing, the vacuum sintering and the hot isostatic pressing by low pressure
在參與自貢硬質合金有限責任公司研製的dy - 500型低壓真空燒結爐自動控制系統設計和調試的基礎上，本論文對實踐工作進行了總結與提高。根據現場經驗和深入分析，論文的主要內容有:針對低壓真空燒結爐，分析脫蠟、真空燒結、低壓熱等靜壓工藝原理，並論述了溫度、真空度、壓力三個主要因素對生產過程的影響。Surface, the easliy wear and tear parts use grinding - resistant material, extruding part use variable cylinder diamethe extruder with compact structuures, transmission gear with hard gear ter detachable pitch, great extruding p0ressure, high vacuum degree, low loading capacity ( electricity - saving more than 25 % than the same product ). it reaches advanced domestic level andcan replace imported items. it is suitable to produce hollow brick with high hole ratio, coal waste rock hollow bricks, shale hollow bricks, prower coal ash hollow - bricks. the extruder won the scienttific and technological progress pride of the lst building material scientific and techniques achievement exhibition in jiangsu province and the golden prize of the mational brick and tile energy - saving lxln achievement
該機結構緊湊、傳動齒輪均系硬齒面，易損件採用耐磨材料、擠出部分採用變缸徑、變螺距、擠出壓力大、真空度高，裝機容量低（比同類產品節電25 % ） ，性能優于進口同類設備，適用生產高孔洞率空心砌塊、煤矸石、頁巖、精煤灰空心磚及各類高摻入量粉煤灰磚和低塑性原料磚，該機在江蘇省首屆建材科技成果展覽會科技進步獎； 94全國磚瓦節能四新成果展覽會金獎，西安國際博覽會金獎。The bigger the diameter, the high the heat efficiency, but the weak the temperature increasing ability, length has less effect on the heat efficiency, tilt angle has less effect on the flow field and temperature field while it is larger than 30 degree, vacuum degree and emissivity have great effect on the flow field and temperature field while there is a great temperature difference between the liquid in the tube and the surroundings, the furring has less effect on the heat transfer but should be cleaned up in 3 - 5 years because of poor water quality, the higher the solar flux or the more the temperature difference between the liquid and the surrounding, the more the heat loss and the lower the heat efficiency
分析了各種因素對太陽能真空集熱管流場和溫度場的影響。直徑越大，熱效率越高，但升溫能力弱；長度對熱效率影響不大；傾斜角度大於30后，自然對流已經能夠充分進行，考慮以能夠吸收到最大太陽輻射為主；真空度和發射率對熱效率和溫度場影響很大，尤其是在介質溫度與環境溫度差異比較大時；水垢對傳熱影響較小但由於水質的問題應該被3 5年清洗一次；太陽輻射強度越大，介質溫度與環境溫度差異越大，熱損失越大，效率越低； 4The effect of annealing condition such as temperature, time and vacuum on microstructure of vo2 films was studies. the crystalline vo2 films can be obtained after annealing at 450 3 hour in 10pa vacuum. the conductivity of films increases linearly with increasing the temperature
對退火溫度和時間以及真空度的影響進行了研究，在低真空（ 10pa ） 450退火3小時后得到的vo _ 2薄膜，晶體顆粒呈長方柱狀，具有良好的結晶性能。Germany busch vacuum pump, which owns high vacuum degree, low noise and long service life, is adopted
德國貝克的真空泵，真空度高，噪音低，壽命持久。分享友人