波來向 的英文怎麼說
中文拼音 [bōlāixiàng]
波來向
英文
direction of wave-
Newer to the treatment armamentarium are autologous blood injections, in which the doctor injects your own platelet - rich blood into the region of the injured tendon to deliver nutrients that help heal it
比侵入式沖擊波療法更先進的是自體移植式血液注射療法，醫生將你自己的富含血小板的血液注射進受損傷的腱子部位中，以此來向部位傳遞營養物質來幫助損傷部位的痊癒。Abstract : propagation characteristics of r wave in a pavement structures are analysed in this paper. based on the propagation characteristics of r wave, the horizontal propagation wave is simulated by using r wave, the vertical propagation wave is also simulated by using body wave in calculating dynamic response of pavement structures. the availability and accuracy of dispersion curves measured by sasw in pavement structures is analysed by using the presented method used to calculate dynamic response
文摘:利用有限單元法分析了道路結構的r面波傳播特性：在深度方向上衰減較慢，傳播較深，波動性大.提出了在道路結構動力響應計算中，利用面波來模擬水平向傳播波，利用體波來模擬豎直向傳播波.通過算例來驗證該方法的可靠性和精確性，並利用這一動力響應計算方法分析了道路結構表面波測試中所獲彌散曲線的可靠性I then demonstrated with the help of three matches my idea of poland moving westward.
后來我用三根火柴打比，說明我對波蘭向西發展的主張。Abstract ： to obtain the high frequency ( hf ) array signals, an applied circuit called hf array signals generator is designed using dsp and duc ( digital up converter ). the generator simulates the generation of output signals of 9 - element arrays with different array format, different direction of arrival ( doa ) and existing cochannel signals respectively
為了在實驗室中獲得短波天線陣列信號，應用dsp晶元和duc晶元（數字上變頻器）設計了一個實用電路短波陣列信號發生器，模擬實現了短波九元天線陣的多種陣型、不同來波方向及存在同頻多信號時的陣列輸出信號。A retrodirective array can transmit a signal back to the interrogator ’ s position without any a priori knowledge of the incoming angle or relying on sophisticated digital signal processing algorithms. this merit makes it have good applied possibilities in modern military, especially digital commercial communication systems
方向回溯天線能夠自動跟蹤來波方向，而不需要來波方向的先驗知識和復雜的數字信號處理演算法，這一特點使其在現代軍用、尤其民用數字移動通信系統中有很好的應用前景。The gain of the retrodirective antenna in the incoming signal direction fluctuates with ? db as the incident angle increases
在來波方向上，天線系統的增益隨來波的入射角有fzdb的波動。In principle, ultrasonic sensors are suspended over a road, which keep emitting pulse signals periodically to nearby and feed back waves to decide existence of any obstacles, thus to detect the speed, height, length, different sizes ( heavy, medium and small ) of moving vehicles and accumulative flow as well as length of motorcade. optionally, it can be applied to multitude driving lanes simultaneously for traffic data. by integrating and analyzing these measured data, the necessary figures concerning traffic flow may be obtained, which are fundamental basis guiding road buildings
本課題設計的是一種懸掛式超聲波車流多信息檢測器，通過懸掛于路面上方的超聲波探頭向路面周期性地發射脈沖信號，利用地面回波來判斷遮擋物地存在，可用於檢測行駛中的機動車車速、車高、車長、大中小分型以及累計車流量、車隊長度等信息，並可用於多個車道車流信息的同時檢測，綜合這些測量參數可獲得車流量的必要數據，可為公路建設提供必要的基礎依據。With shoulders thrown back, shrill and noisy laughter and many backward glances at the men who turned to look at them, they marched about and were completely in their element
她們挺起胸部，放聲大笑，回過頭來向盯著她們的男人們頻送秋波，像在家裡那樣肆無忌憚。The main researches of this dissertation are some algorithms for the estimation of direction of the signal ’ s arrival which are the critical technology of smart antenna
本文研究的主要內容是智能天線中的關鍵技術之一，信號來波方向估計（ doa ）的幾類演算法。This article systematically compares two major types of beam - forming techniques in adaptive smart antennas for mobile communication systems, i. e., direction - of - arrival based beam - forming and reference signal based beam - forming
系統地比較了移動通信系統中自適應智能天線的兩大類波束形成技術，即基於來波方向的波束形成和基於參考信號的波束形成。Because these methods do not need not only the doa of the signal ' s and the array manifold but also signal waveform, the blind beamforming algorithms using cyclostationarity signal ' s properties are the genuine blind algorithms
該方法既不需要知道來波方向和陣列流形，也不需要提供訓練數據，僅利用信號的循環平穩特性就可以實現真正意義上的盲自適應波束形成。Mainly this paper discusses applying time - frequency analysis in several questions, including estimation of doppler parameter imaging of sar, detection of moving target and estimation of direction of arrival in array signal processing
本文討論了時頻分析在合成孔徑雷達成像中的多普勒參數估計的應用、時頻分析在動目標檢測中的應用以及它在信源來波方向估計中的應用。The results show that wavelength locates in gain zone of semiconductor optical amplifier, and have higher peak power and proper time delay between the two pulses for the second order super gauss control pulse in semiconductor optical amplifier. a high quality amplified signal pulse can be achieved. the chirp can be reduced notability by using cascading soa in cross gain modulation based on soa, and the distance and the peak power of conversion optical pulse can be increased notability, and we can let down the demand for wavelength based on xgm in soa and enhance the flexibility of wavelength conversion
我們應用二階超高斯光脈沖與高斯信號脈沖同時注入soa和應用soa與非線性光學環鏡（ nolm ）相結合的方案來對信號脈沖進行壓縮整形，模擬顯示，在調節系統合適參數的情況下，波長位於soa增益區的二階超高斯控制光脈沖在具有較高的峰值功率和適當時延下輸入soa時，最後可以得到放大的高質量超簡訊號光脈沖；在基於soa的交叉增益調制（ xgm ）全光波長轉換中，採用級聯的soa能有效地使反轉光脈沖的頻率啁啾得到有效降低，波長向下轉換的距離和反轉光的峰值能量都得到明顯提高，降低了利用交叉增益調制（ xgm ）波長轉換中對波長精度的要求，從而提高了波長轉換的靈和性。The slow - wave structure ( sws ), as a key part of twt where the beam - wave interaction carries out for exciting microwave energy, determines its performance directly. with the development of techniques, novel slow - wave structures are needed to improve the performance of twt with higher power and wider bandwidth
隨著科技的發展，人們對行波管的性能提出了更高的要求，更高的功率和帶寬成為人們追求的目標，隨著微波管向更高的頻段發展，也要求有新型的慢波結構來提高行波管的性能。Scientists used wilkinson microwave anisotropy probe wmap to capture the cosmic portrait that reveals the afterglow of the big bang, i. e. the cosmic microwave background radiation
科學家利用威爾金森微波各向異性探測器wilkinson microwave anisotropy probe ， wmap ，測量來自不同方向的宇宙微波背景輻射，展示了大爆炸后的餘輝。In view of the seepage hazards existent in the homogeneous soil dam in landong reservoir and on the basis of physical property of the media and geophysical characteristics of the study area, the authors reasonably selected such geophysical techniques as high - density resistivity, ground penetrating radar, transient rayleigh wave and spontaneous polarization to make integrated exploration and find out the seepage path of water sources, thus providing grounds for evaluating stability of the dam body and designing the reinforcement plan
摘要針對藍洞水庫均質大壩出現散滲等病險，根據區內各介質物理性質及地球物理特徵，合理選擇了高密度電阻率、探地雷達、瞬態瑞雷波和自然電場4種物探方法進行綜合勘查，查明病險的水源來向，為評估壩體的穩定性和加固處理設計提供依據。Abstract : in view of the seepage hazards existent in the homogeneous soil dam in landong reservoir and on the basis of physical property of the media and geophysical characteristics of the study area, the authors reasonably selected such geophysical techniques as high - density resistivity, ground penetrating radar, transient rayleigh wave and spontaneous polarization to make integrated exploration and find out the seepage path of water sources, thus providing grounds for evaluating stability of the dam body and designing the reinforcement plan
文摘:針對藍洞水庫均質大壩出現散滲等病險，根據區內各介質物理性質及地球物理特徵，合理選擇了高密度電阻率、探地雷達、瞬態瑞雷波和自然電場4種物探方法進行綜合勘查，查明病險的水源來向，為評估壩體的穩定性和加固處理設計提供依據。Then, base on the determine channel modeling methods, we present a frequency - selective mimo fading channel with von mises probability density function, which is used to characterize non - uniform angle - of - arrival caused by non - isotropic scattering. then we analyze partial cross correlation function of proposed model and proved the model theoretically
然後，通過對其它多入多出通道模型的分析和對比，並基於確定性通道建模方法，建立了一種通用的頻率選擇性多入多出衰落通道模型，藉助「 vonmises 」概率密度函數，以描述非均勻散射體導致的非均勻本地來波方向分佈。Microwave radiation was detected from all directions in the sky. later on, scientists realized that the origin of this radiation is cosmological. the spectrum matches with that emitted by a blackbody of temperature 3k
1965年，科學家發現天空任何方向皆可偵測到微波，這是一個重要的天文發現，但研究員卻懵然不知，后來才知道這些微波來自宇宙，而這些輻射的光譜對應于絕對溫度為3k的黑體輻射。Dashan : hi, glen. it ' s good to see you again. glen, i ' d like you to meet my friends su rumei and li yunbo. this is my old friend, glen parker
大山：你好，格倫。再次見到你我很高興。格倫，我來向你介紹一下我的朋友蘇如梅和李雲波。如梅，雲波，這是我的老朋友格倫?帕克。分享友人