極低溫度 的英文怎麼說
中文拼音 [jídīwēndù]
極低溫度
英文
very low temperature-
It can germinate at 0 ? and develop at 3 - 5 c even suffer from chilliness of - 21 c. at the fifth or sixth year, it ablooms at july, fruits at august or september. when the seeds are scattered by wind, the plant turn to death
其自然生長環境的土壤偏酸性，有機質含量極低，氣候多變，最高月平均溫度3 5 ，最低月平均溫- 19 - 21 ，年降水量800mm ，無霜期僅有50d左右。At first, analysis of extreme temperature ' s spatial distribution of variety trend shows that the minimum temperature in the north are going up while the maximal temperature in east china declining widely, which is a numerical characteristics of prevailing warmer - winter in recent years. so the change of minimum and maximal temperature are dissymmetrical
首先從總體上，分析極端最高和極端最低溫度變化趨勢的空間分佈：北方地區極端最低溫度普遍上升，且幅度較大，是近年來暖冬盛行的一個數值化特徵；極端最高溫度在東部普遍下降，最低最高溫度變化具有不對稱性。The method of obtaining high concentration of na2feo4 solution by quick electrolysis mainly contains four aspects : adoption of either a diaphragm or an ionic membrane electrolytic cell in which a thin anodic cell lying between the two cathodes, ( 2 ) using an iron anode that has larger specific surface area, ( 3 ) keeping suitable concentration of naoh in the anodic cell, adoption of lower current density and higher electrolyzing speed. the practical technique parameters follow a s below : the naoh solution of 14 - 16mol / l, the temperature of 303 - 308k, the surface anodic current density of 300a / m2, the unit electrolyzing speed of efficiency larger than 6. 0a / l
快速電解獲取高濃度na _ 2feo _ 4溶液的方法，主要包括四個方面：採用兩陰極室夾一厚度較小的陽極室的隔膜（或離子膜）電解槽；使用比表面積較大的鐵網陽極；保持陽極室中有適宜濃度的濃naoh溶液；採用較低的電流密度和較高的電解速度。具體工藝參數是： 14 16mol / lnaoh溶液、溫度303 308k 、表觀陽極電流密度300a m ~ 2 、有效單位電解速度6 . 0a / l 。The endurance limit is reduced for temperatures above room temperature.
溫度高於室溫，持久極限則降低。The two sunspots of a pair have different polarities, one would be a magnetic north and the other is a magnetic south. thus, we believe that there are magnetic field lines joining the two sunspots of a pair. the strong magnetic field locks the gas of the photosphere in places and inhibits the hotter gas below to rise at the sunspots
黑子經常成雙成對出現，每對皆由極性相反的黑子組成，若一個為磁北，另一個必為磁南，由此我們估計每對黑子皆由磁力線所連系，強大的磁場牽制著光球層上的氣體，並阻止了下層較熾熱的氣體上升至黑子范圍，結果黑子比太陽表面其他地方溫度較低。Liquid helium is inert, colorless, odorless, noncorrosive, extremely cold, and nonflammable. helium will not react with other elements or compounds under ordinary conditions
液態氦不活潑，無色，無嗅，無腐蝕性，溫度極低，不可燃。氦一般情況下不同其它元素或化合物反應。Phylogenetic diversity and cold - adaptive hydrolytic enzymes of culturable psychrophilic bacteria associated with sea ice from high latitude ocean, arctic
北極高維度海域海冰嗜冷菌系統發育多樣性及其低溫水解酶分析Aerostatic bearings have been applied widely on the ultra - precision in the aviation, aerospace and the main axes and the slide of the precision measuring instrument and inertial measuring apparatus because of high rotation accuracy, calm operation, low friction and long life - span etc. they can also be used in fields range from both high and low temperature to both high and low velocity, sometime even to environment full of radioelement
氣體靜壓軸承回轉精度高、運轉平穩、摩擦小、使用壽命長，可以在極高和極低的溫度、超低到超高的速度下，以及輻射環境中工作，因此在航空、航天領域以及精密測量和慣性測試設備上得到廣泛應用。Zno varistors have been widely used in electronic and electrical power devices and systems because of excellent nonlinear v - i characteristics and high absorbance of electric current surges. with the smt ( surface mounted technology ) development, traditional zno varistors can not meet the multilayer thin films lamination structure nappe varistor ceramics and metal electrode low temperature co - fire need. however, the best character of zno - v2o5 varistor can sinter in common furnace during lower temperature ( 900 ), not only settling the problem relate to upon, but also saving energy sources
Zno壓敏電阻因其優異的v ? i非線性和較高的浪涌吸收能力而廣泛應用在電子、電力設備系統上。然而，隨著表面貼裝技術（ smt ）的發展，傳統的zno壓敏陶瓷不能滿足多層膜獨石結構疊層壓敏電阻元件陶瓷與金屬電極低溫共燒的需要。而zno ? v2o5系壓敏陶瓷的最大優點是能用普通燒結爐在較低溫度（ 900 ）下燒結，不僅解決了以上問題，還大大節約了能源。In agreement with this concept is the additional experimental result that decreasing the mean hydrogen injection velocity increases the stability limit temperature.
這一概念是與補充試驗的結果相符的，即降低氫的平均噴射速度使穩定性極限溫度增加。Abstract : on the basis of the theory of controlled phase - changes of piezoceramics, high - temperature polarizing technology makes initial working temperature a little higher than curie temperature of a sample, but the polarization voltage needed is greatly lower than the one needed in normal polarization ( only 1 / 10 - 1 / 5 ). the improved polarizing technology can make polarization more complete
文摘:壓電陶瓷的高溫極化是利用受控的場致有序化的順電鐵電相變原理，使起始極化溫度略高於樣品的居里溫度，但所需的極化電壓大大低於常規極化，僅為1 / 10 - 1 / 5 ；選擇較高的降溫升壓速率，可使極化趨于更加完全，具有常規極化工藝無可比擬的優越性。The experiment result shows that the operating conditions have a significant effect upon the chromium content, and it increased with the raise of current density and ph value, but decrease with the temperature raise of the bath
溫度、 ph值、陰極電流密度對鍍層中鉻含量的影響較大。試驗結果表明：降低溫度、提高ph值和陰極電流密度有利於提高鍍層的含鉻量。It is unaffected by either the extreme temperatures or the tough conditions of use in agriculture
此傳感器既可以不受極低溫度的影響，又能夠經得住農業中的嚴酷環境。Mineral insulating oils - determination of kinematic viscosity at very low temperatures iec 61868 : 1998 ; german version en 61868 : 1999
礦物絕緣油.在極低溫度下運動粘稠度的測定Chart industries vacuum insulated pipe systems are designed for the transfer of cryogenic liquids at extremely cold temperatures needed for flash freezing, aerospace applications, super conducting research, liquid nitrogen fogging for special effects, and many more applications
查特真空絕熱管道系統的設計是為需極低溫度深冷液體應用：冷凍，航空，超導研究，用液氮產生特殊效果的煙霧，及其它各種用途。Based on the daily surface air temperature data from 200 stations and daily precipitation data th from 739 stations during the second half of the 20 century, schemes for analyzing climate extremes were designed mainly according to percentiles of a non - parametric distribution and the gross errors in the daily data were removed based on a newly designed quality control procedure. the spatial and temporal characteristics of change of climate extremes over china were studied, the major conclusions are summarized as : th 1. slight decrease trends were found for the 95 percentiles of daily maximum temperatures during summer, but larger increase trends were revealed for the 5th percentiles of daily minimum temperatures during winter, especially in northern china
本文利用中國20世紀後半葉較為完整的逐日溫度和降水觀測資料，設計了嚴格的資料質量控制方法，以統計上的邊緣分佈的客觀定義為主要依據，確定了極端溫度和降水事件，研究揭示了近50年中國極端氣候事件變化的規律，得到以下主要結果： 1 .全國最高溫度的極端高值略趨下降；最低溫度的極端低值升溫趨勢顯著，這種增溫在冬季、在北方最顯著。This is very novel sealing material made of pure ptfe through a unique process, therefore, it retains all excellent properties of ptfe and has valuable characteristics, such as : very high tensile strength, this product is an ideal sealing material applied at the positions of intermediate and low temperature
彈性膨脹聚四氟乙烯密封帶上經過獨特加工製造而成的最以新穎的密封材料，是用純聚四氟乙烯製成，因此它保留了聚四性氟乙烯所具有一切優良性能，同時還具有極好的柔韌性和很高的抗拉強度等可貴特性，是中低溫度部位理想的密封材料。This paper offers some performance data calculate with computer program and figures which variation of performances of refrigeration in different refrigerants and circle with evaporating temperature. it shows that it is feasible to calculate thermodynamic properties of refrigerants with equation of state pr in ideal circle and new refrigerants sfuch as r134a, r152a have not more coefficient of performance ( cop ) than r22 in single - press circle but still have preferable practical value in freezing refrigeration ; the results also demonstrate the importance and need for applying mixed - refrigerant in freezing
本文給出了幾種製冷工質在單級和雙級壓縮製冷循環下的一些性能數據及各性能隨蒸發溫度變化比較圖。結果表明，利用pr方程得出的製冷工質物性，可用於計算製冷循環性能；在單級製冷循環中， r12和r22仍具有較高的製冷系數，但新工質如r134a 、 r152a在較低溫度製冷中具有很高的研究價值；計算也表明，在較低溫度製冷中，混合工質的研究是極有價值的。In extreme temperatures, the inflation rate will decrease a little bit
在極限溫度中，充氣速度會有一點降低。The materials give excellent resistance to extremes of temperature, abrasion, exposure to oils, grease, water, steam and common industrial solvents and chemicals
能在極高/低溫度（ - 40 ~ 115 ）的環境中工作，耐磨損，能暴露于油、潤滑脂、水、水蒸汽及一般溶解腐蝕性化學物質中工作。分享友人