zero-field 中文意思是什麼

zero-field 解釋
零場的
  • zero : n (pl zeros zeroes)1 【數學】零;零號。2 零位;零點,起點;(溫度表的)零度,冰點;座標原點;無...
  • field : n 菲爾德〈姓氏〉。n 1 原野,曠野;(海、空、冰雪等的)茫茫一片。2 田地,牧場;割草場;〈pl 〉〈集...
  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. The field inside the conductor is zero.

    在導體內部的場強為零。
  3. Using the lagrangian at a finite temperature of the scalar field which can generate global cosmic string in the spontaneous breakdown, solved the gravitational field equation outside the core of a global cosmic string at the background of temperature, corrected the result in the theory at zero temperature. on the basis of this, the properties of the gravitational field outside the core of a global cosmic string are discussed

    考慮溫度效應,運用改寫的能自發破缺產生整體宇宙弦的標量場在有限溫度下的拉氏密度,求解了整體宇宙弦核外的引力場方程,對零溫理論中的結果作了修正,進而討論弦核外引力場的性質
  4. Sem shows that the composite ferrite is like cotton and displays one by one, their diameters are about 50nm. vsm measurement in the strong magnetic field reveals that its coercive force and remanence are zero, that is, the product is supermagnetic one

    Sem表明復合型鐵氧體呈「棉花狀」 ,顆粒排列緊湊,粒徑在50nm左右;磁滯回線顯示該鐵氧體的矯頑力和剩磁均為零,證明其為超順磁物質。
  5. Based on an analysis of the major factors affecting the quality of data obtained in aeroelectromagnetic survey, this paper has put forward zero horizontal drift correction methods such as field value standardization and phase check and correction, studied and developed a suite of techniques suited to data - processing and graphical representation for aeroelectromagnetic method

    摘要在分析探討影響航空電磁測量數據質理主要因素的基礎上,提出了場值標定,相位校驗改正等零水平漂移改正方法,研究開發了一套適合航空電磁法數據處理與圖示的方法技術。
  6. Software design realizes functions of flow characteristic correction, automatic zero setting, span setting, alarm, fault diagnosis and field display ; 4

    3 、軟體設計實現了流量特性修正、自動調零、調量程、報警、故障自診斷、現場顯示等功能。
  7. It is found that in the absence of dissipation and average photon number of the reservoir the linear entropies of the atom and the field varies with time periodically, going to zero at the disentanglement times, and the period is the same as that of bell function and the linear entropy of the total system is zero at any time. if the cavity dissipation and the average photon number of the reservoir is taken into account, the linear entropies of the atom and the field present local maxima and minima and the difference between them diminishes with time, tending to asymptotic values

    結果表明,在忽略腔損耗和熱庫的平均光子數時,原子和場的線性熵有周期性的變化,在沒有糾纏的時刻,值為0 ,此時的周期與bell函數相同,而系統的線性熵在任何時刻都為0 ;如果考慮到腔場的損耗和熱庫的平均光子數,原子和場的線性熵有局部的最大值和最小值,它們之間的差距隨時間逐漸減小,趨向一個漸進值。
  8. The judgment of the element to be zero in calculating the energy - hamiltonian - matrix in the crystal - field theory

    晶體場理論計算能量哈密頓矩陣中為零矩陣元的判別
  9. Thus, at zero magnetic field the metal disk acts as a short circuit ( very low resistance ), and in a strong enough field it is equivalent to an empty space ? an open circuit ( very high resistance )

    因此,沒有磁場時金屬圓盤會造成短路(電阻很低) ,磁場夠強時它就像空無一物的空間,成為開路(電阻很高) 。
  10. Zero potential selection of electrostatic field

    靜電場電勢零點的選擇
  11. In order to improve the quality of the voltage signals, this paper has adopted the scheme of three phases and six organs in signal - generator part, which can eliminate the errors caused by the assembly warp and the zero shift of organs. this paper also has analyzed the distribution and varying rules of the magnetic field in the signal - generator part, then based on the conclusion of the analysis improved the structure of signal - generator, which could completely eliminate the noise signal caused by the roughness of the face on the magnetic steel ring. the improvement not only met the requirement of this study, but established the theory foundation for the super - high precision magnetic encoder in future research

    因此,為提高原始電壓信號的質量,本文採用三相六元件的信號發生方案,通過差分處理濾除了由於裝配偏差和零點漂移帶來的信號誤差;本文對編碼器信號發生結構進行了磁場分析,依據磁場分析的結論對編碼器常用的信號發生結構進行了改進,改進后的結構利用積分原理在理論上能夠完全消除信號中由磁鋼環表面粗糙度引起的信號噪聲,進一步提高了信號質量,此結構不僅滿足了本課題的需要,而且為今後研製超高精度的磁電式編碼器奠定了理論基礎。
  12. When a ferromagnetism items is under the application of stress, the phenomenon that the tangential component of magnetic leakage field has maximum value and that the normal component of magnetic leakage field changes polarity and acquires zero value at the stress concentration zone will take place

    鐵磁性工件在受到應力作用時,在應力集中處會有漏磁場的切向分量出現最大值、同時法向分量改變符號且過零值點的現象。
  13. We have investigated transport properties of electrons in magnetic quantum structures under an applied constant electric field. the transmission coefficient and current density have been calculated for electron tunneling through structures consisting of identical magnetic barriers and magnetic wells and structures consisting of unidentical magnetic barriers and magnetic wells. it is shown that the transmission coefficient of electrons in a wider nonresonance energy region is enhanced under an applied electric field. the resonance is suppressed for electron tunneling through double - barrier magnetic ( dbm ) structures arranged with identical magnetic barriers and magnetic wells. incomplete resonance at zero bias is changed to complete resonance at proper bias for electron tunneling through dbm structures arranged with different magnetic barriers and magnetic wells. the results also indicate that there exist negative conductivity and noticeable size effect in dbm structures

    對磁量子結構中電子在外加恆定電場下的輸運性質進行了研究.分別計算了電子隧穿相同磁壘磁阱和不同磁壘磁阱構成的兩種磁量子結構的傳輸概率和電流密度.計算結果表明,在相當寬廣的非共振電子入射能區,外加電場下電子的傳輸概率比無電場時增加.對于電子隧穿相同磁壘磁阱構成的雙磁壘結構,共振減弱;對于電子隧穿不同磁壘磁阱構成的雙磁壘結構,無電場作用時的非完全共振在適當的偏置電壓下轉化為完全共振,這時的電子可實現理想的共振隧穿.研究同時表明,磁量子結構中存在著顯著的量子尺寸效應和負微分電導
  14. Data in table 8 and numerous field observations show that because the soil is less disturbed, zero tillage results in less weed populations than conventional tillage

    表8的資料和一些大田觀察資料表明,因土壤較少被擾動,免耕比傳統耕作的農田雜草群體更少。
  15. According to the effective field expression which has been derived in former, the phenomenon that the tangential component of magnetic leakage field has maximum value and the normal component of magnetic leakage field acquires zero value at the stress concentration zone of positive magnetostriction ferromagnetism materials under the application of tensile stress and negative magnetostriction ferromagnetism materials under the application of compressive stress is explained theoretically through analyzing and discussing

    根據所得到的地磁場中受力鐵磁性材料有效場表達式,通過分析討論,解釋了受拉力作用的正磁致伸縮鐵磁材料和受壓力作用的負磁致伸縮材料在應力集中處漏磁場切向分量出現最大值、同時法向分量為零值的現象。
  16. The second aspect : in zm model, under mean field approximation, the zero - point energy of vaccum is often neglected

    第二個方面,在zmng中,在平均場近似下,真空零點能往往是被忽略的
  17. Three kinds of joint elements for finite element analysis of temperature field are given, ie, the joint element with finite thickness, the joint element with nearly zero thickness and the simplified joint element

    摘要目前混凝土壩的模擬分析正從單壩段模擬向全壩模擬發展,因而需要採用接縫單元,筆者給出三種溫度場接縫單元的計算模型:有限厚度接縫單元、近零厚度接縫單元及簡化接縫單元。
  18. Then, the numerical calculation to the reflection light spectrum is deduced by utilizing berremam ’ s 4 4 matrix, which will supply theoretical gist to the following experiments. at last, the psct with better planar structure is achieved, and the psct is bistable at zero field

    本論文首先簡要介紹了膽甾相液晶自身特有的光學特性,然後利用berrenman 』 s4 4矩陣方法對膽甾相液晶的反射光譜進行了數值理論計算,從而為下一步製作psct提供了理論依據。
  19. This star is at the zero field angle and, as in our example above, we are enjoying a diffraction limited view of this star

    這顆星的角度就是0度,我們當然很樂意進行這樣的單星測試。
  20. The rapid and reversible change between fluid and solid enables erf potential applications in mechatronic devices, cars and general machines. the transmission ability of a self - made cylinder coupling with zeolite - based erf was investigated, the torque transmission of the coupling in wide ranges of driving speed and electric field was measured. the relationship between the transmission torque, the zero field viscosity of erf and shear yield stress of erf under different electric fields was obtained and compared with theoretical prediction

    本文用沸石和硅油配製的電流變液,在自製圓筒式聯軸器上研究了在一定的速度范圍和有無電場作用條件下測量了其扭矩傳遞能力,獲得了傳遞扭矩與零電場電流變液粘度以及電場中電流變液的剪切屈服應力之間的關系,並與理論值進行了比較。
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