very low temperature 中文意思是什麼

very low temperature 解釋
超低溫
  • very : adv 1 〈用於修飾形容詞、副詞或分詞〉很，甚，頗，極，非常。2 〈與否定詞結合〉（不）怎樣，（不）大...
  • low : adj 1 低的；淺的，矮的。 low flight 低飛。 a low temperature 低溫。 low tide [water] 低潮。 The g...
  • temperature : n. 1. 溫度，氣溫。2. 體溫。3. 〈口語〉發燒，高燒。
  1. There has been many papers to discuss the in - medium quark and gluon condensates in nuclear matter which use the models with su ( 2 ) l su ( 2 ) r sym - metry. now, we make use of the chiral model su ( 3 ) l su ( 3 ) n including the baryon octet to discuss the quark condensate < qq > in strange matter, where q is an up or down quark field. on the one hand, from the experimetal data, it is found that < qq > vac = - ( 225 25mev ) 3, on the other hand, with the hellmann - feynman theorem, quark condensate can be evaluated on the hadronic level. in this paper, we will investigate the quark condensate in strange matter with the chiral symmetry su ( 3 ) l x su ( 3 ) rspontaneous breaking lagrangian to obtain the variation of the quark condensate in the strange matter when the baryon number change. it can be applied to understand the neutron stars when the neutron star are considered to be constructed by the strange matter. because nertron stars are homogeneous and at very low temperature, we will use the mean - field approximation and zero temperature throughout this paper

    鑒于已有大量文獻討論了核物質中的夸克凝聚，本文將討論在奇異物質中的夸克凝聚。而在介質中的夸克凝聚的基本公式可由hellmann - feynman理論導出，所以運用手征對稱自發破缺拉氏量以及平均場近似，我們就可以討論在奇異物質中的夸克凝聚，由所計算的結果表明： （ 1 ）奇異物質中的夸克凝聚隨奇異物質密度的增大而單調減小。 （ 2 ） -凝聚的出現對衰減率有影響。
  2. Amore 2001 has successfully investigated the gakkel ridge and arctic ocean in vicinity of its geological and geophysical nature, as well as the nature of sea ice and biology in this area. the preliminary onboard petrology and bathymetry results show that the mantle beneath the gakkel ridge with low temperature has only encountered very low degree partial melting during the spreading and there is no any direct relationship between the crust nature and the spreading rate along the gakkel ridge in any simple petrologic way. mantle temperature and fracture zone density also play a major role on the crust nature, besides spreading rate

    對所取得資料的初步研究表明gakkel洋中脊之下的地幔僅經受了較低程度的部分熔融，具有較低的溫度。 gakkel洋中脊處的地殼性質和巖漿活動與擴張速率之間不存在任何直接的巖石學相關性，擴張而導致的巖石圈頂部的冷卻並不是決定洋脊處地殼性質的最重要因素。地幔溫度和斷裂帶的存在與否及其密度對地殼性質具有重要的影響意義。
  3. Different from mammals, the early embryos of fish can not be preserved for the long period at the very low temperature ( - 196 ). therefore, three methods were usually applied to cryogenic preservation of the fine and rare species of fish : 1 ) perserving fish spermatozoon in cryogenic condition. researchers have had systematically studied on this technique for many years, and this technique has been utilized in application and made a lot of effects ; 2 ) combining with the techniques of cell engineering ( nuclear transplantation and electric fusion etc. ), and through the process of culturing histiocyte of fish, cryopreservation and re - culture after thawing, carrying out somatic cell breeding of fish. the past studies showed that the nucleolus of somatic cells of fish have totipotency

    多年來，國內外學者對各種魚類精液的冷凍保存進行了大量的系統研究，目前這項技術已達到實用水平，並日益發揮作用；二是對魚類培養的組織細胞冷凍保存，通過魚類細胞的培養、超低溫凍存、解凍后再培養過程，結合細胞工程技術（如核移植、電融合等）進行體細胞育種；大量的研究結果表明魚類體細胞核具有發育的全能性，隨著細胞培養技術、細胞工程技術日益發展成熟，完全具備實現魚類物種種質長期保存的理論基礎和技術條件。
  4. A very low linear expansion coefficient sample carrier made from invar, ensures that temperature change has no effect on the sample position

    由不脹鋼製成非常低膨脹系數的樣品載臺保證溫度變化對樣品的位置沒有影響。
  5. Because the lattice vibration is weak at very low temperature, the contributions of electrics and other low energy excitations become dominant parts of specific heat. therefore, we can study the micromechanism of many physical phenomena from specific heat measurement

    在很低的溫度下，由於晶格振動變得很弱，電子和低能激發貢獻越來越突出，這對我們通過低溫比熱研究很多現象的微觀機制十分有利。
  6. The thermal efficiecy of traditional heat engine cycle with the low temperature is very low

    從熱力學原理看，傳統中低溫熱源模式熱力循環的熱功轉換率很低。
  7. Histochemical staining in tl transgenic tobaccos showed that sigp1 promoter was not only organ - specific ( especially expressed in leaves and guard cells ), but also highly inducible by multi stress treatment such as drought, aba, high salinity and low temperature. quantitative analysis showed that gus activity in roots was very weak and no great changes were observed after treatment

    通過對t1代轉基因苗的組織化學定位表明，該啟動子驅動的gus基因在逆境（如乾旱、 aba 、高鹽和冷）脅迫的葉片中表達，根中不表達，且老葉中的表達量高於幼葉中的表達量，說明其表達受發育階段的調控。
  8. The tensile and compression experiment on bulk nanocrystalline ag prepared by igc method was carried on mt810 with different grain sizes and zwick 10tn2s machine at different strain rates under normal temperature respectively. the stain rate sensitivity m was found to be 0. 025, which was extremely lower than the ordinary values. also the work hardening exponent is very low

    本文從用惰性氣體蒸發冷凝和真空原位壓結法（ igc ）制備得到的直徑80mm ，厚度7 . 6mm的大尺寸納米晶金屬ag樣品上切割得到符合力學實驗要求的拉伸和壓縮試樣，在mts810和zwick精密力學測試機上分別精確測定了拉伸和壓縮應力?應變曲線與晶粒尺寸和應變速率的關系。
  9. Only when the flower must is ready, the fermentation is taken to a very low temperature to obtain a more expressive wine

    只有精華果汁呼之欲出的時候，才在極低的溫度進行發酵，獲取更富有表達力的葡萄酒。
  10. Moreover, the li / s batteries with above - mentioned composite cathode materials have very low self - discharge rate at room temperature

    而且，得到的li / s電池在室溫下自放電率十分低。
  11. The dielectric constant of srtio3 ( sto ) thin films is voltage - dependent near the curie temperature tc ( about 40k ). and no dispersion in is observed in sto at frequencies up to 10 ghz. yba2cu3o7 - x ( ybco ) high temperature superconducting thin film has very low microwave surface resistance

    Srtio3 （ sto ）薄膜在其居里溫度附近（ ~ 40k ）具有介電常數隨電場強度變化而變化的性質，同時sto在10ghz以下介電常數沒有頻率色散性。
  12. By changing the negative bias current density, gaseous ratio and total pressure, nanocrystalline diamond film is prepared by ion - assisted bombardment method at the substrate temperature of 700 ? 00 ? and mixture gaseous of ch4 and h2 the effect of growth parameters on the diamond film is studied. the diamond film presents very low compressive stress and excellent field emission character

    採用離子輔助轟擊法，以ch _ 4 、 h _ 2為源氣，襯底溫度為700 900 ，通過改變襯底負偏壓、 h _ 2和ch _ 4氣體比例以及工作氣壓，制備出納米金剛石薄膜，並對工藝參數對金剛石薄膜沉積的影響進行了研究。
  13. The tetragonal phase of pbtio3 is very stable owing to its large tetragonal strain, and relatively small tetragonal stain of batio3 is an important reason for its low - temperature phase transition

    由於鈦酸鉛具有較大的四方應變，使得其能夠在四方相穩定下來，而鈦酸鋇較小的四方應變是其仍能夠發生低溫鐵電相變的一個重要原因。
  14. Measurement of pressure, temperature and humidity operated in much the same principle as the older version of radiosonde, but computation of wind was made use of the vlf ( very low frequency in the range of 10 - 13 khz ) signals of a world - wide navigational network, omega

    該系統量度高空氣壓、氣溫及濕度的方法與舊式無線電探空儀大致相同，但在測風方面則採用了一種新的概念，利用世界性奧米茄導航站網的甚低頻信號（ 10 - 13khz ）來計算出高空風向和風速，無需用雷達追蹤探空儀位置。
  15. If the earth had no atmosphere, its average surface temperature would be very low of about - 18j rather than the comfortable 15j found today

    假若沒有大氣層，地球表面的平均溫度不會是現在合宜的15 ，而是十分低的- 18 。
  16. The liquid temperature control provides a very accurate temperature control of the lower measuring plate at a relatively low purchasing cost

    在較低的測量板，液體溫控系統非常精確，且價格實惠。
  17. The film prepared at low temperature was amorphous tio2 and it ' s photocatalysed efficiency was very low

    Apcvd法在較低的基板溫度下制備出的tio _ 2薄膜基本上是非晶態的，光催化效率很低。
  18. Adopt stator and rotor duel cooling way to control the temperature of high viscosity product and heat sensitive material to a very low degree

    採用定子、轉子雙冷卻方式，對于高粘度產品及熱敏感材料，溫度可控制到極低。
  19. Discharge - sand gate offers double disk cooling system creditable condition for low temperature ; when sand temperature is very high, it can change the way of discharge - sand gate into intermittent type : put rating sand to double disk and spray water for falling temperature until temperature falls designed range ; open the discharge - sand gate and discharge sand ; and then takes anther cycle ; this type has good effect after real testing, which is the effective way for exerting cooling function of double disk

    卸砂門這種控制方式給雙盤冷卻系統的可靠降溫提供了條件，當型砂溫度較高時可將卸砂門改成間歇式的，先將雙盤內加入給定的砂量，噴水后直到溫度降到給定的范圍后，卸砂門打開將砂子卸出，然後進行下一循環，這一方式經實際運行驗證效果良好，是充分發揮雙盤冷卻作用的有效途徑。
  20. With the development of the technology of cell culturing and cell engineering, so it is possible to preserve fish species for a very long time. 3 ) using embryonic stern cells ( es ). fish embryonic cell has the totipotency and is better f or breeding than somatic cell, but it can not so strong to resist the very low temperature

    三是通過es途徑。魚類胚胎幹細胞具有發育的全能性，利用魚類胚胎細胞育種比體細胞更具有優越性，但耐超低溫性不強，只有少數學者對魚類胚胎細胞進行凍存及發育潛能的研究，還沒有對魚類胚胎細胞進行凍存培養的系統研究。
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