峰值密度 的英文怎麼說

中文拼音 [fēngzhímìdù]
峰值密度 英文
peak density
  • 峰 : Ⅰ名詞1. （山的突出的尖頂） peak; summit 2. （形狀像山峰的事物） peak-like thing Ⅱ量詞（用於駱駝）
  • 密 : Ⅰ名詞1 （秘密） secret 2 [紡織] （密度） density 3 （姓氏） a surname Ⅱ形容詞1 （距離近; 空隙小）...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  1. Results show that : ( 1 ) for each particle size of andalusite, variation tendency of the properties of the material is generally the same : the maximum of bulk density, compressive strength and rupture strength appears in the range of 5 % - 10 % content of fiber, these properties of the material remarkably decrease as the fiber content exceed 10 % ; while at the same fiber content, the properties of the material increase with the increase of firing temperature

    結果表明： （ 1 ）對于不同粒度的原料，性能變化規律大致相同：在同一燒成溫度下，體積密度、常溫耐壓強度、常溫抗折強度在5 10之間出現峰值，加入量超過10之後材料的性能明顯下降；在相同的纖維含量下，隨著燒成溫度的提高，試樣的各項性能均有所上升。
  2. We apply the agrawal ' s theory model of soa, and study the temporal characteristics of the output pulse for input picosecond optical pulses with different sharpness edges passing through a semiconductor optical amplifier, and find that the peak power and the pulse width of the output pulse depend on the input pulse peak power, the sharpness degree of the input pulse edge and the bias current of soa

    本文應用agrawal的關于soa理論模型，詳細研究了具有不同陡峭邊沿的皮秒超高斯光脈沖經soa后的時域特性的變化，發現輸出脈沖的峰值功率、脈沖寬度與輸入脈沖的峰值功率、輸入脈沖邊沿的陡峭程度以及soa的偏置電流密切相關。
  3. Then these separated interferograms can be recorded by ccd camera the experiments with the multi - frame interferometer was carried out on a small gas - puff z - pinch device with 23 kv working voltage and 210 ka peak current and about 2 risetime, and good results were obtained

    該套干涉儀在小型噴氣式z箍縮裝置上進行了實驗， z裝置的工作電壓23kv 、峰值電流210ka 、電流上升時間約2 。根據干涉圖條紋的移動數，可以計算出等離子體的電子密度和運動速度。
  4. In the terms of interpolation, the image reconstructed from nearest interpolation or linear interpolation has good edge but serious noise ; reconstruction from 4 * 4cubic interpolation or three b - spline or three - order lagrange interpolations has better local character. 2 x 2cubic interpolations which has both better edge and local character is the ideal interpolation, the following is the basic principle during reconstruction : ( 1 ) the more width of interpolation, the more number of summation and the more order of interpolation polynomial, the higher of density resolution ; ( 2 ) the more of interpolation polynomial and width of interpolation, the more of reconstruction time simultaneously, aimed at eliminating the effects of noise contained in projection data, in this paper, author analysis cause and effects of common artifacts. importantly, discusses convolution back - projection reconstruction algorithm with a shift axis of rotation has been derived for correcting images that acquired with a divergence axis of rotation using the fan beam geometry with an angle - equaled detector

    在ct圖像重建時，選擇有限帶寬窗有較好的空間解析度，三角形窗有較好的密度解析度，選擇餘弦窗則使得空間解析度與密度解析度的折衷；從窗函數的頻譜角度來講，可以用於圖像重建的一個良好的卷積窗函數應該具備以下條件： （ ? ）小的3db帶寬b ，即最小的主瓣寬度； （ ? ）最小的旁瓣最大峰值a ； （ ? ）最大的旁瓣峰值衰減速度d ；就內插函數而言，臨近點內插與線性內插重建圖像噪聲大，但有較好的邊緣與細節； 4 4三次內插、三次b -樣條與四次拉格朗日多項式內插圖像平滑，局部特性較好。
  5. Building up peak bone mass in childhood and adolescence and maintenance of bone mass in adulthood prevents fractures from osteoporosis in later life

    在兒童期及青年期建立一個高的骨峰值，以及於成年後有效保持骨質密度，能防止在晚年由於骨質疏鬆癥引致的骨折。
  6. Some researches about frequency doubling are made, and two methods to improve intensity of second frequency generation are given. we realized q - switched 532 nm laser, by using nd : gdvo4 as laser crystal, using cr4 + : yag as saturable absorber, using ktp as intra - cavity frequency doubling crystal. average power of 109mw, repetition of 40khz, pulse width of 30ns, pulse energy of 2. 6uj, peak power of 91w are obtained

    4 .對倍頻理論進行研究和分析:討論兩種提高二次諧波功率密度的方一法;實驗匕在國內首次實現ld端面泵浦nd : gdvo4 / ktp ，用cr4 + : yag作為可飽和吸收片的綠光激光器，腔內倍頻得到了平均功率為109mw 、重復頻率為40khz 、脈寬為3ons 、單脈沖能量為2 . 6閃、峰值功率為glw的調q綠光輸出。
  7. The results show that minor and major earthquakes calculated from moderate earthquake have not consisted probability and the ratios of bedrock peak accelerations under different exceeding probabilities are closely correlative with earthquake environments

    結果表明，由中震地震動參數換算得到的小震、大震地震動參數不具備一致概率水平，不同概率水準下基巖峰值加速度的比值與地震環境密切相關。
  8. Determined by dsc. whereafter, the surface micro - morphology of both sides of tini sma thin film deposited on glass was investigated by atomic force microscope ( afm ), and the difference of morphology between the two sides is observed. it has been shown that, in the growing surface of sputtered tini film, the trend of grain to accumulating along the normal direction like a column is clearly observed, and the grain is very loose which resulted in more microcavities, but in the surface facing to glass substrate, grain is so compact that there are hardly microcavities

    通過濺射法，在玻璃襯底上淀積了tini薄膜，並在600進行了真空退火， dsc法測得其馬氏體逆相變峰值溫度為75 ，利用原子力顯微鏡，對玻璃基tini形狀記憶合金薄膜的襯底面與生長面進行了表面微觀形貌分析，發現：生長面晶粒呈現出沿薄膜法線方向柱狀堆積的趨勢，晶粒緻密性差，微孔洞多；而襯底面晶粒緻密，幾乎沒有微孔洞存在。
  9. 6 ), the process that h20 is adsorbed on the electrode surface and the hydroxyl group is formed to oxidize the co may be the rate - determining step ; in the region iil ( logi > l. 6 ), all of the tafel curves show a curvature until the current densities reach the peak value, indicative of a possible limiting current. the effect of rare earth elements on methanol electro - oxidation has not been reported in literatures

    在低極化區（ logi 1 . 3 ） ，甲醇發生脫氫反應並形成反應中間體，其中co成為未被氧化的毒物，此過程成為速率限制步驟；在更高的極化區（ 1 . 3 logi 1 . 6 ） ， h _ 2o吸附在電極表面並解離生成[ oh ] ，促進了co的氧化，此為此階段速率控制步驟：在第3個極化區（ 10gi 1 . 6 ） ， tafel曲線發生彎曲，電流密度也最終達到峰值。
  10. But the comprehensive properties were improved remarkably. with the addition of carbon nanotubes, the polarization of charging process decreased, the plateau of discharge became flatter and the migration of potential of peaks value of cyclic voltemmograms reduced. for the other hand, the exchange current increased, ohm resistance and electrochemical reaction resistance of the electrodes decreased, the diffusion resistance of hydrogen and the resistance of adsorption decreased, too

    摻入碳納米管對儲氫合金電極的容量影響較小，但其電化學性能卻有較大的改善，主要體現在：充電的極化減小，放電平臺更加平穩、循環伏安曲線的峰值電位隨掃描速度增大的遷移量減小，交換電流密度增大，電極的歐姆電阻、電化學反應、擴散電阻和吸附電阻均減小。
  11. According to heat load source of die cavity, temperature distribution gradient equations and heat flux equations and the peak value equations of temperature load at die cavity surface have been obtained with research of temperature distribution and transfer laws of die surface by unsteady heat transfer theory

    摘要根據鍛模型腔熱負荷來源，通過非穩態傳熱理論，分析研究了模具工作表面層的溫度分佈與傳遞規律，給出了型腔表面溫度分佈梯度和熱流密度公式，並給出了鍛模型腔表面的溫度負荷峰值的計算公式。
  12. From the theoretical calculation and the experimental results, we makehe conclusion that the last cavity setup is most suitable for the wavelength tuning. we calculated the stable regions and the peak power on the sesam, at the same time, ave the beam size on the sesam and on the crystal. we achieved the q - switchedutput with a three - mirror folded - cavity after optimizing it

    計算了v型腔和五鏡腔的穩區、晶體和sesam上光斑半徑、 sesam上的峰值功率密度，對腔的參數進行了優化，並做了sesam被動調q和鎖模的激光實驗，實現了v型腔調q 、五鏡腔調q的激光輸出。
  13. Peak probability density function of von mises stress process

    應力過程峰值概率密度函數的研究
  14. Presently, the laser pulse from the high power ultrashort laser system is several femtoseconds in duration, tw ( or pw ) level in peak power, 1020 w / cm2 ( or 1021 w / cm2 ) in focusing power density, according electric field is much stronger than coulomb field in atoms

    目前，高功率超短脈沖激光放大系統輸出的激光，脈寬達到幾個飛秒，峰值功率達到太瓦甚至拍瓦量級，聚焦功率密度達10 ~ 20w cm ~ 2 ，甚至1021w cm2 ，相應的電場比原子內庫侖場強得多。
  15. The fft inversion method is fit for reconstruction of density distribution with sharp peaks and complex shape. the results of numerical simulations of this method show high inversion accuracy and fast calculation speed

    快速傅立葉變換法適合於重建具有陡峭波峰和復雜形狀的等離子體密度分佈，數值模擬的結果表明該方法具有計算精度高和速度快的特點。
  16. The results showed that the magnitude and shape of mfl vary with the change of wire rope tension. with the stress increment, the peak to peak values of broken wires reduce obviously and the total strength of mfl signal becomes weak and the ripple of mfl signal curve appears

    試驗研究發現，漏磁密度的大小及形態都隨鋼絲繩張力的變化而改變，隨張力增加，斷絲峰峰值明顯減小，漏磁信號的總體波動強度減弱，漏磁曲線上有應力波紋出現。
  17. As for the m - ary psk signals, the differential phase peaks at the transients are used. the pdf ( probability density function ) of the differential phase peaks of m - ary psk are the mean of m - 1 pdfs of m - 1 phase peaks

    由於進制的數字調相信號每個子碼間具有個相位突變，其相位突變的峰值滿足一個概率密度為的分佈，若信號為元psk信號，則相位突變峰值的概率密度函數就是個概率密度之和的平均。
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