Doing the further research on the division frequency stack on the foundation of study of predecessor, at first the residual moveout correction is done to the seismic record, make the phase axle regularity, doing foundation for the same phase stack ; then carried on division scale processing by wavelet transform ; spectrum whitening is done to each scale, the high and low frequency band need to do prolongs, the middle frequency bands only increase the value of the frequency spectrum ; several kinds of methods that estimate the value of signal - noise ratio has been studied further, and summarize their advantage and disadvantage as well as the scope of application ; the seismic record after spectrum whitening is stacked by weighting with the value of the signal - noise ratio ; then estimate the value of signal - noise ratio which is each scale section after stacking, the scale that the signal - noise ratio is big is assigned big weighting, otherwise, the scale that signal - noise ratio value is small is assigned small weight ing, and carried on weighted reconstruct to each scale section
本文在前人研究的基礎上,在分頻疊加方面做了進一步的研究。首先對地震記錄進行剩餘時差校正,校
齊同相軸,為同相疊加做好基礎工作;然後對地震記錄用小波變換的方法進行分尺度處理;對各個尺度分別做譜白化,對于高、低頻段需要做頻帶
延拓,中間頻段僅提升頻譜值;對于幾種信噪比定量估計的方法進行了深入的研究,並且總結了它們的優缺點以及適用范圍;對譜白化后的地震記錄用信噪比估計值作為加權系數進行加權疊加;對于各尺度的疊加剖面也進行信噪比估計,對于信噪比大的尺度給予大的加權系數,反之,信噪比值小的尺度給予小的加權系數,對各尺度疊加剖面進行加權重構。
Qi fa sanitary ware located in kaiping shuikou town which is the base of sanitary ware in china. it specialize in producing high classical sanitary ware such as basin mixer, shower / bath mixer ect
齊發衛浴有限公司位於中國衛浴生產基地,潔具之鄉- - - - - -開平市水口鎮,專業生產高檔衛浴潔具產品:水龍頭,淋浴花灑,
延時沖洗閥,下水器等衛浴產品的開發和生產的專業生產廠家,並集衛浴潔具批發、安裝工程於一體。
Our company is mainly manufacture extrusion die, blowing die head, air bubble die, stretch film die, foam die, coating die, screen changer, have complete equipment, strong technical force, enjoying high trust and support of our customers
我廠是專業生產擠出平模、吹塑模具、氣墊模具、流
延模具、發泡模具、塗覆模具、換網的廠家,設備
齊全,技術力量雄厚,贏得國內外客戶的依賴和支持。
Finally, extension algorithms for nurbs curves are discussed by means of homogeneous coordinates
最後,利用
齊次坐標討論了nurbs曲線的
延伸演算法。
Methods the 54th generation of transformed human embryonic tendon cells and artificial composite materials of carbon fibers ( cf ) and polyglycolic ( pga ) were co - cultured in vitro to construct tet. lt was frozen in liquid nitrogen with four kinds of cpa for 2 months. post - thawed quickly and transplanted into hind limbs of nude mice, and repaired the defects of achilles tendon. after 2, 4, 6, 8, 12 weeks, the morphological, histological, ultrastructure, short tandem repeat loci and immunohistochemistry examination were detected, and biomechanical strength of tet were examined. result tendon cell survived and could secret type i collagen after 12 weeks to transplanted into nude mice. in the group of dmso + raffmose + kh2o4, vacuole in mitochondrion degraded i tendon cell ranged in order, abundant collagen fibers were found and linked each other and the biomechanical strength was increased as time elapsed. c onclusion dmso + raffmose + kh2o4 could protect tet in deep low temperature
組織工程肌腱制備完成後在四種抗凍劑保護下液氮凍存2月;快速復溫后植入裸鼠以修復跟腱缺損, 2 、 4 、 6 、 8 、 12周后取出,觀察形態學、組織學、電鏡和免疫組織化學變化,短串聯重復位點檢測和生物力學變化。結果實驗組組織工程肌腱體內植入12周后仍有肌腱細胞存活並分泌型膠原;隨著時間
延長, 10二甲基亞碸( dmso ) +棉子糖( 30mmol l ) + kh _ 2po _ 4 ( 25mmol l )組線粒體空泡減少,肌腱細胞排列整
齊,膠原纖維增粗並連接,抗拉強度增高。
Placed inside the blister we find the headphone, an extension cable, a ? " > 1 / 8 " adapter, a small user manual and a small blue towel to clean the phones, everything neatly arranged
盒子裏面整
齊的擺放著一根
延長線、一個轉換插頭,一本使用手冊和一塊用來清潔耳機的藍色軟布。
The author considered great numbers of transmission characteristics of real channel in lms model and properly simplified it according to requirement in the project. the key characteristics in the model include multi - path fading, shadow fading, doppler shift, propagation noise, multi - path delay and and state transform of three status homogeneous markov chain described by lms model, etc. the key characteristics of channel are properly collocated and made to be the evidence theory of hardware implementation
Lms模型考慮了大量的實際通道傳輸特性,結合課題需求,實現過程中對lms模型做了適當簡化,考慮了其中的多徑和陰影衰落、多普勒頻移、傳播噪聲、多徑
延遲以及lms模型所描述的三狀態
齊次markov鏈的狀態轉換等,對其所描述的主要通道特性適當組合,以此作為硬體實現時的理論依據。
Zidane s off - field blandness extends to his wardrobe, which is just sort of dull and unimaginative. luckily his wife has perfect taste
齊達內球場下的平淡無奇
延伸到他的衣櫃里,簡直是有些呆板缺少想像力。
Zidane ' s off - field blandness extends to his wardrobe, which is just sort of dull and unimaginative. luckily his wife has perfect taste
齊達內球場下的平淡無奇
延伸到他的衣櫃里,簡直是有些呆板、缺少想像力。萬幸的是,他的妻子非常有品位。
Giorgio chiellini has extended his juventus contract until 2011, and he is confident the old lady will be back in the champions league before then
齊耶里尼與尤文的合同
延長到了2011年,同時他確信老婦人在那之前將回回到奪冠集團
The content of fpga is downloadable via prom, jtag or the special port on chip by xilinx software. the module can delay input signals from 0ns to 1. 8us stepping by 25ns. it ' s precision is 25ns
插件經過測試,能在0 71時鐘周期之間,以一個時鐘周期為步長實現對輸入信號的可編程
延遲,
延遲精度為25ns ,滿足觸發判選系統總觸發邏輯對
齊來自各個探測器觸發子系統信號的要求。
If standard varies even among teachers who are responsible for teaching the language, how do we ensure the continuity of the language, traditional values and culture
如果負責傳承的華文師資也出現參差不齊的現象,如何確保語文傳統價值和文化精神得以延續?