negative zero 中文意思是什麼
negative zero
解釋
負零-
If the velocity of atoms is near to zero, the light for ces will tend to confine the atoms near to nodes and antinodes. the stability depends on the magnitude of the negative slope of the light force, the depth of the potential well and the momentum diffusion coefficient. it is important to select the parameters, e. g
如果通過激光冷卻能使原子速度降至很小甚至為零，光壓力的作用將使原子被較穩定地囚禁于激光駐波場的節點和反節點處，其穩定程度取決于該處光壓力曲線負斜率的大小、對應勢能的勢阱深度以及動量擴散系數的大小，因此，如何在實驗中合理選擇激光強度、失諧量等顯得尤為關鍵。 -
Not only may the rate of interest conceivably be zero ; it may conceivably be negative
在我們的想像中，利率不僅可以是零，而且可以是負數 -
We will show that not any mean of the revenue rates of the industrial indexes is significantly beyond value zero at confident level 0. 90. moreover the mean of the revenue rate of sse 30 index is negative ( though not significant ). and the fact of " the heritage of variance " appears congruous to the feature of industries represented by the corresponding indexes
第二章，通過分析上海股市各分類指數的收益率序列的特徵，得出結論如下：各序列都非正態，有自相關性和異方差存在，相對適宜用garch （ 1 ， 1 ）來擬合；除了上證商業（ 1b0002 ） ，各分類指數收益率的均值在85的置信度下都不顯著地異於0 ，而上證30 （ 1b0007 ）的收益率竟小於0 ；在各分類指數中， 」波動繼承性」的結果和各分類指數對應行業的特徵是相關的。 -
In details, the increasing rate of carbon absorption in guangxi province was the highest, which in tianjin and shanghai city was about zero and was negative in fujian and zhejiang. carbon emission was increasing in all the provinces, among which the increasing rate of shanghai was the highest
就碳吸收來說，廣西、山東增長最快，天津、上海基本上持平，而福建、浙江等省份則基本上逐年下降；就碳排放來說，各省份都呈逐年增加的趨勢，其中上海增幅最大。 -
When the width of the foundation is smaller, the friction force is firstly increased from zero at the central area of the foundation, then decreased to zero at the edges of the foundation, hence there is a peak ; when the width of the foundation and the thickness of the soft ground is larger, the frication force is almost zero from the central area of the foundation to a certain distance, then increased, at last decreased to zero at the edges of the foundation, therefore there is a peak ; and when the width of the foundation is larger and the thickness of the soft ground is smaller, the friction force is firstly increased from zero at the central area of the foundation in the negative direction, then decreased to zero, so there is a negative peak, then increases in the positive direction, eventually decreased to zero at the edges of the foundation, hence there is a positive peak
當基礎寬度較小時，從中心線為零處開始增加，達到峰值后，開始減小，直至基底邊緣處為零；當基礎寬度和軟土地基厚度較大時，從中心線處開始，向外側延伸一定距離，幾乎為零，然後開始增加，達到峰值后，開始減小，直至基底邊緣處為零；當基礎寬度較大，並且軟土地基厚度較小時，從中心線為零處開始反向增加，達到反向峰值后，然後反向減小，減小到零后，逐漸正向增加，達到峰值后，再逐漸減小，直至基底邊緣處為零。 -
In effect, a negative resistance is inserted in the circuit so that its total resistance is zero.
實際上，這就是把負電阻接入電路，使電路的總電阻為零。 -
And with consumer - price inflation creeping up to a two - year high of 3. 3 % at the end of march, real interest rates have been around zero or negative this year
消費品物價膨脹在3月底達到兩年中最高的3 . 3 % ，這使得今年的實際利率為零或是負值。 -
The device can protect start - up status and running status of asynchronous motors by differential protection, over current protection, negative - sequence current protection, zero - sequence current protection, inverse time current protection, under - voltage protection and so on, can measure every kind of electricity, and can process the function of telecontrol, telemetering and telecommunication
其依靠電流差動、速斷、負序過流、反時限、零序過流和低電壓等保護方法實現了片電動機的運行、啟動和自啟動過程進行保護，並實現各種電量的計量，同時具有遙控、遙測、遙信的功能。 -
This paper analyses the test results gained by mixed simulation, and validates the reliability of the use of transient zero current and negative current in fault identifying
文中討論了負序電流的分佈及提取問題，試驗數據同樣表明負序電流用於單相接地故障識別是可行性的。 -
Given the basic idea of a chain of positive and negative, or positive and zero, or zero and negative pulses as representing binary 1s and 0s, there are many possible codes in which the pulses might be transmitted
基於使用正脈沖、負脈沖或者正脈沖、零或者零、負脈沖來表示1和0的基本思想，可以用這些脈沖來傳遞各種二進制編碼。 -
When the two objects are at zero velocity, the total energy of the system is zero, because while the rocket ship made of positive matter has gained positive kinetic energy, the ball of negative matter has gained an equal amount of negative kinetic energy
當兩個物體的速率都為零，整個系統的能量也為零，因為當正質量構成的火箭飛船獲得正動能時，由負質量構成的球體也獲得了等量的負動能。 -
Unified power flow controller ( upfc ) is one of the most powerful and most promising controllers of facts. if we use upfc to control the transmission parameters, terminal voltage, line impedance and phase angle in normal situation and use it to compensate zero sequence and negative sequence currents when one of transmission lines is cut off, we can implement two phases operating in high voltage transmission lines, which can improve stability and reliability for the transmission system
統一潮流控制器（ upfc ）是功能最強、最具發展潛力的靈活交流輸電系統（ facts ）控制器之一，如果在常規條件下，用upfc實現輸電線路的電壓調節、移相、潮流控制、阻尼振蕩等功能，在發生單相永久性接地或單相斷路故障時，由傳統的三相跳閘改為單相跳閘，用upfc的並補來濾除兩端系統的零序和負序電流，用upfc的串補來提高輸電線的傳輸功率，以實現兩相長期運行，那麼輸電系統的穩定性、可靠性將大大提高。 -
Remember the following words and expressions : e. g. multimeter ； circuit ， current ； voltage ； resistance ； digital multimeter ； analogue multimeter ； analogue multimeter scales ； zero adjustment control ； zero adjustment control for resistance ranges ； measurement ranges switch ； transistor test socket ； meter probe ； positive terminal ； negative terminal ； anode ； cathode ； red lead ； black lead ； power supply ； connect in parallel ； connect in series
記住萬用表、電路、電流、電壓、電阻、數字萬用表、模擬萬用表、表頭、機械零位調整器、歐姆零位調整器、量程選擇開關、晶體管插孔、表棒、正接線端、負接線端、陽極、陰極、紅導線、黑導線、電源、並聯、串聯等常用英文單詞，並逐步掌握。 -
By choosing some appropriate exponential weight functions we prove that the essential spectra and the eigenvalues ( except the simple zero eigenvalue ) have negative real parts, thus we get the locally asymptotically exponential stability of travelling waves ( al ) and ( a2 ) in some weighted spaces
通過選用合適的權函數，我們證得在加權空間線性化運算元的本質譜和除簡單特徵值零以外的特徵值均具有負實部。因此，我們得到行波（ a1 ） ， （ a2 ）在加權的l ~ 2 （ r ）空間的局部漸近指數穩定。 -
The protector makes the over - current value, zero - phase - sequence component, negative - phase - sequence and so on as protection criterions, in protection theory ; it makes atmel 8 - bit microprocessor at89c55wd as the core, with which the lattice lcd is linked, in hardware
該保護裝置在保護理論上，以檢測過電流幅值、零序電流為判據；在硬體實現上，以atmel單片機at89c55為核心，外接圖形點陣式液晶顯示器、觸摸式按鍵等外設。 -
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 -
With a near zero savings rate, private consumption expenditure and residential house prices may be quite sensitive to interest rate changes. thus historically housing prices and housing starts in the us bear a generally negative relationship to interest rates
美國的儲蓄率幾乎是零，私人消費支出及住房價格對利率變動相當敏感，因此美國的住房價格與新屋動工率向來與利率呈明顯的反向關系。 -
Positive and negative zero
正零和負零。 -
Single value type represents a single - precision 32 - bit number with values ranging from negative 3. 402823e38 to positive 3. 402823e38, as well as positive or negative zero,
值類型表示一個值介於- 3 . 402823e38和+ 3 . 402823e38之間的單精度32位數字，以及正零或負零、 -
Standard ieee floating point has other oddities that you need to be prepared for, such as positive and negative infinities, and negative zero as well as positive zero
） 。您還需要知道標準ieee浮點數的其他特殊定義，比如正無窮大和負無窮大，負零（還有正零） 。
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