space attenuation 中文意思是什麼

space attenuation 解釋
空間衰減
  • space : n 1 空間；太空。2 空隙，空地；場地；（火車輪船飛機中的）座位；餘地；篇幅。3 空白；間隔；距離。4 ...
  • attenuation : n. 1. 變薄，變細。2. 減少，減弱。3. 稀釋。4. 【物理學】衰減。
  1. As for a space - based cloud radar, the change of the radar reflectivity n and the change of attenuation rate along with the cloud liquid water content have been compared between 37 ghz and 94ghz. the transmittance t of single level cloud for different heights and liquid water content has also been calculated at 2 frequencies. by defining a = n tr, which combines both effects of radar reflectivity and transmittance, we have examined the values of a at 37ghz and 94ghz for high, middle and low cloud liquid water contents

    對空間測雲雷達，討論了37ghz和94ghz這兩個頻率的雷達反射率和衰減系數隨雲液水含量的變化；計算了不同高度的單層雲在不同頻率，不同含水量情況下的雲層透過率_ ；定義a = _來綜合考慮雷達反射率和透過率對空間測雲雷達回波的影響，分析比較了雲含水量高、中、低時37ghz和94ghz的a值大小。
  2. According to statistics parameters of the typical clouds over xi ' an region and cloud data obtained from the global distribution of cloud cover under the auspices of world meteorological organization, for xi ' an region typical cloud, the parameters of khragian - mazin cloud drop size distribution are obtained. based on xi ' an cloud water content profile, on earth - space paths, attenuation due to cloud are calculated by means of the k - m distribution. it is shown that the attenuation induced by cloud are taken into account at ka - at elevation angle smaller than 30 and v - band paths

    第三，根據西安地區氣象觀測數據，討論了西安典型雲的宏觀和微觀物理特性；根據西安典型雲的觀測結果和世界氣象組織提供的數據，得到西安典型雲的k - m雲滴譜參數；並根據西安地區雲的液水含量，計算了地一空路徑上雲的衰減，結果表明，在v波段和仰角小於30度的ka波段路徑，雲的衰減需加以考慮。
  3. Turbo code also has better capability in resisting attenuation and disturbance, so it has great potential applications in deep space communication with bad channel condition

    Turbo碼還具有很強的抗衰弱、抗干擾能力，這使得turbo碼在通道條件較差的深空通信中有很大的應用潛力。
  4. Volume, fundamental to the sculptor s discourse, is subjected in karla gaenssler s work to a distinctive reduction. with the elongation and attenuation of her figures she aims at a composition in which the distribution of structures in space suggests multiple interrelationships and shifting perspectives

    然而巖石也是由柔弱的滴水造成的，纖細而有明澈的智慧，是感性而又蘊藉著生機，彷佛可以和你耳語交談，這就是水成巖了。
  5. The prediction methods of rain attenuation for design of terrestrial and earth - space systems are also introduced

    文中還介紹了用於系統設計的雨衰減預報方法。
  6. At short microwave and long millimeter wave bands, the ratios of the rain - induced attenuation on up - link to down - link are estimated on earth - space slant paths. a comparison of the prediction results with the experiment data in boston and kashima areas is carried out

    在微波和毫米波低端，預測了地一空路徑上、下行鏈路雨衰減的比率，並與美國波士頓和日本kashima地區的實驗數據進行了比較，結果一致性較好。
  7. It also has been validated by the test result. on the basis of reduced stress attenuation formula, the paper elicit theoretical calculation expressions of jam lengths in hole blasting and space between charges in linear charge blasting. linear charge blasting at the net of highway to zhuhai aerodrome and the hole blasting at underground stope in gaofen mining company have been design by the expressions

    根據建立的條形藥包爆破徑向應力衰減方程，得出了淺孔爆破堵塞長度和條形硐室藥包爆破藥室間距理論計算公式；按推導的計算式設計了珠海西區機場路埡口條形藥包爆破和高峰礦業有限責任公司地下采場淺孔爆破。
  8. This paper has studied the mean attenuation, scattering, and back scattering cross sections of groups of small rotating spheroids about characteristics of microwave scattering when their rotatory axes are oriented at random in any direction in 2d plane and 3d space respectively under the condition of normal distribution, and that those physical quantities are changed with different variance, expectation and wave lengths of incident electromagnetic wave

    本文研究旋轉軸方向分別在平面內和空間中隨機取向呈正態分佈時的小旋轉橢球粒子群的平均衰減截面、平均散射截面、平均後向散射截面等微波散射特徵，以及這些物理量隨軸向分佈期望、方差及入射電磁波波長的變化。
  9. Adopting rotor field - oriented vector control methods, through which make the stator and the rotor magnetmotive forces can be kept orthogonal all along during operation of the bldcm, combining hysteresis current modulation ' s current control advantage and space voltage vector modulation ' s torque ripple attenuation advantage, then designing a sort of bldcm hysteresis current svpwm control method

    摘要研究採用轉子磁場定向的矢量控制方法使無刷直流電動機定、轉子磁勢矢量始終保持正交，結合滯環調制電流控制和空間電壓矢量調制，設計了無刷直流電動機滯環電流svpwm控制方案。
  10. Space optical communication has much advantage such as much greater communi - cations capacity, high - bit - rate, high secrecy, high anti - electromagnetic disturbance, small size and low attenuation. it is a lively branch of communication. so each country attaches important attention to space optical communication, and achieves great progress

    空間激光通信具有大通信容量、高傳輸速率、保密性好、高抗電磁干擾能力、終端設備體積小、功耗低等優點，是通信領域內一個富有生命力的分支，因此各個國家都非常重視對空間激光通信的研究工作，並取得了可喜的進展。
  11. A computed tomography scan of the neck revealed variously sized low attenuation cystic lesions involving the sublingual and submandibular space, with extension into the parapharyngeal space up to the base of the skull, causing a mass effect on the surrounding structures

    電腦斷層顯示許多低密度囊腫?滿了整個下頜間隙及舌下間隙，並延著側咽間隙向上延伸至顱底，造成對周圍組織的腫塊效應。
  12. From the point of kinematics and dynamics, the author analyses the propagation rules of stress waves in concrete, namely time - space relations, wave amplitude attenuation, dispersion effect and characteristics of transmission of reflected waves and acoustic waves. combining with engineering practices, the author also concluded the main points of low strain detection of integrity of longdiameter underwater cast - in - situ piles, and pointed out that comprehensive and relational utilization of reflected waves method and acoustic wave transmission method can accurately evaluated the integrity of pile shaft and then improve the reliability of detection. 6figs., 3refs

    從運動學和動力學角度，分析應力波在混凝土中的傳播規律：時空關系、波幅衰減、頻散作用以及反射波與聲波透射的特點，結合工程實踐，總結大直徑水下灌注樁低應變檢測的工作要點，指出綜合、合理運用反射波法與聲波透射法，可以較準確地評價樁身完整性，提高檢測結果的可靠性.圖6 ，參3
  13. With certain field strength, an increase in the space length of electrodes can increase the microwave attenuation. however, the increase of space length of electrodes can increase the microwave attenuation that is adjusted by unit space length of electrodes in a nonlinear way

    此外，對不同電極間距下batio _ 3電流變液微波衰減研究表明：相同電場強度作用下，電極間距的增加不僅可有效提高微波衰減的幅度，而且其單位電極間距調控微波衰減的幅度也增加、且是非線性的。
  14. In addition, this paper provides the co - plane display of the volumetric - scan data of two weather radars. in a result, time - space accordance effect and attenuation correction effect for data of two weather radars can be viewed directly

    本文進行了雙雷達聯合探測資料的共面顯示，可以比較直觀地看到雙雷達資料的空間對應效果和衰減訂正的效果。
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