針導 的英文怎麼說
中文拼音 [zhēndǎo]
針導
英文
needle guide-
Through the detailed analysis of the aaf, the defection of using chirp - fourier transform in guidance radar signal processing is pointed out
通過對加速度模糊函數的形態分析也指明了針對線性調頻信號的二次相位匹配處理（ chirp - fourier變換）在應用到制導雷達信號處理中所存在的缺陷。And then facing the problem of the channel estimation of the adaptive modulation system, we conclude out the channel estimation algorithms on maximum likelihood ( ml ) estimation and maximum a posteriori ( map ) estimation under the condition of flat fading channel and selective fading channel in detail. to meet flat fading channel, we simulate the relationship of the ratio between the error covariance in map estimation and ml estimation and pilot symbol message length. the conclusion can be drawn from these results
接著，對自適應調制系統中的通道估計問題難點，詳細推導了平衰落通道條件下和選擇性衰落通道條件下最大似然（ ml ）估計和最大后驗概率（ map ）估計演算法，針對平衰落通道，我們模擬了map估計和ml估計的方差與導頻符號長度的關系，模擬結果表明，錯誤方差受多譜勒頻率的變化影響最大，並且對實際的自適應調制系統，導頻符號長度的取值超過20個符號長度時， map通道估計明顯優于ml通道估計。In this paper, ackerman steering linkage of double - wishbone suspension is taken as the study object, choosing the splitting joint and steering lever joint to carry out the design of optimization the mathematics models are established based on the multi - body system dynamics, applying its analysis method of kinematics to study the mechanism kinetic principles owing to more spatial factors considered, and calling off many hypotheses affecting the accuracy, compared with the traditional methods, the models are better to reflect the realistic motion principles, the results are more exact and applicable moreover, the force analysis is applied to the conduct mechanism the analysis method of dynamics in the multi - body dynamics is applied to study the forces applied on every component, working out the constraint reaction force of up and down ball joints, and developing the current computation program in the end, produce the upper wishbone geometry model in the ansys software package, meshing and carrying out the fea, testifying if the intensity of the wishbone meet with the requirements
本文以雙橫臂獨立懸架的轉向傳動機構作為研究對象，選擇對斷開點和節臂球銷的位置進行優化設計，在此基礎上建立了基於多體系統動力學的導向機構和轉向傳動機構的數學模型，運用該學科的運動學分析方法研究機構的運動規律，編制了通用優化設計軟體。由於考慮了更多的空間因素，取消許多影響準確性的假設，因此建立的數學模型與傳統的方法相比更能反映實際運動規律，得到的優化結果也更加精確實用。此外，本文還針對導向機構進行受力分析，在建立該機構的空間動力學模型后，運用多體動力學中的動力學分析方法研究各個桿件的受力，計算出上下球鉸的約束反力，並開發出了相應的通用計算程序。For this purpos, from the point of the log geology, aimed at the actuality of the current fractured reservoir log geology interpretation and evaluation, based on synthetical analysis of the current domestic and foreign fruit of fractal dimension investigation of reservoir fracture, using the method and technique of fractal dimension, through the further discussion of the fractal dimension characteristics of m index and n index in the log interpretation archie model in a sample way and through the theoretic reasoning to the fractal dimension dfa and m index of fractured reservoir interval ' s log curve, according to the geophysical signification of the fractal dimension dfa of fractured reservoir interval ' s log curve shape : the more complicated the change of the curve shape is, the larger the its dfa value is, then the more complicated space structure of fracture and pore, then the higher value of m index of space structure of fracture and pore, and so on, the text propounds an improved method, based on box dimension, of covering log curve with scale grid, and by programming computes the dfa and its m index value of fractured reservoir interval ' s log curve, for instance, ac and rt curve, ect, then further puts this technique into application investigation, and makes analysis of application effects in the reservoirs located in l area of qx oil field from three aspects : 1. the dfa and its m index value of fractured reservoir interval ' s log curve, for instance, ac and rt curve, ect, which are derived from computing, is used to identify reservoir type by crossplotting m index with the product df _ acrt of fractal dimension of acoustical wave log curve and restivity log curve and by experiential discriminance plate of reservoir type in l area of qx oil field
因此，對該區裂縫性儲集層的類型識別、孔滲特徵的測井地質解釋以及儲層裂縫的發育和分佈規律進行深入的研究便成為本文研究的出發點。為此，本文從測井地質的角度，針對當前裂縫性儲層測井地質解釋與評價的現狀，在綜合分析當前國內外儲層裂縫的分形分維研究成果的基礎上，利用分形分維方法和技術，通過對archie測井解釋模型中的m指數、 n指數的分形分維特性的深入淺出的論述以及裂縫性儲層段測井曲線分維d _ （ fa ）與m指數的理論推導，根據裂縫性儲層測井曲線形態分維值的地球物理意義? ?曲線變化越復雜，則其分維值d _ （ fa ）越大、裂縫孔隙空間結構越復雜、裂縫孔隙空間結構指數m值越高等特徵，提出了改進的基於盒維數的測井曲線網格覆蓋法，編程計算了裂縫性儲層段常規測井曲線（如聲波和電阻率曲線）上分形分維值及其m指數值，進而從以下三個方面對qx油田l區塊的裂縫油藏進行應用研究，效果十分理想： 1將計算得到的可變的m指數與聲波和電阻率分維之積df _ acrt進行交繪，採用儲層分維值分類技術統計分析這些參數變化的規律，並結合qx油田l區塊儲層類型經驗判別圖版，從而實現qx油田l區塊下白堊統的裂縫性儲層的類型識別。This thesis focuses on the key techniques of target segmentation and tracking algorithms of image on the sea, which is used in tv control and guide of aerocraft
論文主要研究了針對海上圖象的目標分割和跟蹤演算法，應用於飛行器末制導中的電視制導系統。Refer to the damage problem to the motor of c41 - 400 air hammer caused by driving system fault, an acknowledged improvement that is adding a v - belt driving into the system has been promoted with failure situations occasionally because of irrational supporting structures
摘要針對c41 - 400型空氣錘由於傳動系統故障而導致電動機損壞的問題，通常的改進方案是增加一級v帶傳動，但由於對改造中的支承設計不合理而失敗的情況也時有發生。The local directional drilling is just staring in terrane, the equipments and the technologies ca n ' t satisfy far and far the spot construction needs, according to current circumstance and considing the existed equipments, the author put forward drilling by air hammer in terrane, having designed compounded - drilling tools, and recommended technology parameters. producing experiments have obtained good achievements in economic and in techniques
國內定向鉆進鋪管技術在巖層只是剛剛起步，設備、工藝遠遠不能滿足現場施工需要，本文針對國內、外巖層定向鉆進非開挖設備及工藝現狀，結合國內大多施工單位的已有設備，提出巖層空氣潛孔錘導向鉆進工法，設計了適合巖層鉆進的實用鉆具，並提出具有針對性的工藝參數，生產性試驗取得了良好的經濟技術指標。On the basis of the study on the speech coder algorithms, paper describe an advanced method of developing dsp system software, and as the guidlines, we developed the programme of whole decoder unit. paper stress on analysis of the ecu in decoder unit. aiming at amr algorithms disadvantage of angularity of synthetical speech, paper study on the specutral extrapolation which apply to extrapolate reflect coefficient of track model to make error conceal processing of amr. at last paper analyze existing echo cancellation algorithms using on mobile communication system
在此基礎上，描述了一種較為先進的大型dsp系統程序開發策略，並以此為指導思想，以美國ti公司c6000dsp開發平臺開發出了整個amr解碼器單元的系統程序。論文對amr解碼器的誤碼隱藏處理單元進行了重點分析，針對原有演算法合成語音自然度不好的缺點，論文研究了將譜外推法應用到amr演算法中外推出聲道模型反射系數參數進行誤碼消除處理。An anticlockwise gyre near the kuroshio north of japan inland is simulated using a high - resolution topography
在高分辨的地形條件下，日本西海岸外側的黑潮北部存在一逆時針漩渦，這可能與該區域的漏斗型地形誘導有關。Abstract : the paper emphasizes on exoatmospheric antimissile missile rapid reaiming problem, and according to pontryagin ' s maximum principle the optimal control law in the conditions of long miss distance and long elimination time is presented
文摘:針對大氣層外反導導彈快速重新瞄準問題，在脫靶量和消除它的時間都比較大的情況下，用龐特里亞金極大值原理求出了最優控制規律。The ming dynasty used besides the technology of forefathers ' monsoon to make certain routes, the compass to gauide marching, they took a lot of records of the constellation oriented datas and the variety of the ocean orb ' s height in different oceanic areas in the book named < constellation chart of acrossing seas > too, which contribute a lot in the archaian astronomy
明朝船隊除了採用前人季風確定航線、指南針導航等技術外，還在《過洋牽星圖》中紀錄了眾多的星宿定位數據和不同海區天體高度的變化，對古代的天文導航有重要貢獻。In march 2005, a dramatic increase in bloodstream infections was noted in multiple patient care units of a hospital in temporal association with the introduction of a needleless ale into use
在2005年3月，有醫院的多個病人監護室內曾注意到，引入無針導管接管單向閥使用相關的短暫血流感染顯著增加。In march 2005, a dramatic increase in bloodstream infections was noted in multiple patient care units of a hospital in temporal association with the introduction of a needleless valve into use
在2005年3月，有醫院的多個病人監護室內曾注意到，引入無針導管接管單向閥使用相關的短暫血流感染顯著增加。Interventional effects of three dimensional rectification apparatus and silver needle heat conductive treatment for lumbar disc herniation
三維正脊療法聯合銀質針導熱療法對腰椎間盤突出癥的干預效果Corneal needle guide
角膜針導子Small medical gas cylinders - pin - index yoke - type valve connections
小型醫用氣瓶.針導軛式閥連接Trumpet pudendal needle guide
喇叭型陰部針導子Small medical gas cylinders - pin - index yoke - type valve connections iso 407 : 2004 ; german version en iso 407 : 2004
小型醫用氣瓶.針導軛式閥連接Complementary effect of traction rotatory manipulation of lumbar spine and silver needle heat conductive treatment on lumbar disc herniation
腰椎定點牽扳療法與銀質針導熱療法治療腰椎間盤突出癥的互補作用Interventional effects of cervical local - point traction manipulation plus silver needle heat conductive treatment for cervical spinal canal stenosis
頸椎定點伸引手法聯合銀質針導熱療法治療頸椎管狹窄癥的效果分享友人