近聲速的 的英文怎麼說
中文拼音 [jìnshēngsùde]
近聲速的
英文
near sonic-
There are altogether 3 dressing rooms, totalled 10 small and big dressing rooms and dressing rooms for special profiles, plus underground dressing rooms, they can hold as many as 1000 actors and other personnel. what s more there is a more than 200 square meters of multi - track recording studio and high speed recording division with daily production 8000 cassette tapes, therefore, a comprehensive service system including performance, recording and tape production is formed
劇院臺口寬15米、高8米、臺深21米，后臺化妝間共有三層，大小化妝間及特型演員化妝間共計10個，加上地下室演員化妝間，可容納近千名演職人員共同使用。中國劇院還有200平方米的多聲軌錄音棚和日生產量達8000盤盒式錄音帶的高速復錄部，從而形成了演出、錄音及音帶製作全方位的服務系統。A catbird, the northern mocker, lit in a tree over tom s head, and trilled out her imitations of her neighbors in a rapture of enjoyment ; then a shrill jay swept down, a flash of blue flame, and stopped on a twig almost within the boy s reach, cocked his head to one side and eyed the strangers with a consuming curiosity ; a gray squirrel and a big fellow of the " fox " kind came skurrying along, sitting up at intervals to inspect and chatter at the boys, for the wild things had probably never seen a human being before and scarcely knew whether to be afraid or not
有一隻貓鵲一種北方的學舌鳥在湯姆頭頂上的一棵大樹上落下來，模仿著它附近別的鳥兒的叫聲，叫得歡天喜地。隨后又有一隻?鳥尖叫著疾飛而下，像一團一閃而過的藍色火焰，落到一根小樹枝上，湯姆幾乎一伸手就能夠到它。它歪著腦袋，十分好奇地打量著這幾位不速之客還有一隻灰色的松鼠和一隻狐貍類的大東西匆匆跑來，一會兒坐著觀察這幾個孩子，一會兒又沖他們叫幾聲。These appliances, available from companies such as decru, neoscale, and vormetric, implement very fast encryption - they typically claim to operate at or close to " wire speed. " they also usually include sophisticated key management facilities for controlling the creation and distribution of cipher keys, cycling of keys, and disposition of keys, besides handling general data encryption
Decru 、 neoscale和vormetric等公司都能提供這些器件，它們實現了非常快的加密通常被聲稱速度達到或接近「線速」 。它們還常常包括高級的密鑰管理設施，除了用於處理一般的數據加密外，還可用於控制密鑰的創建和分發、密鑰的循環和密鑰的銷毀。Being a sort of new principle micromotor in the fronitier of science. the ultrosonic motor ( usm ) is developed at recently twenty years. utilizing the stator surface particle elliptical motion excited by piezoceeramics, the usm is drived by friction force between the stator and rotor. compared with the conventional electromagnetic motor, the ultrasonic motor has the following features : high speed, high holding torque when power is off and so on. because of it ' s characteristics, the ultrasonic motor has obtained some widespread application in robots, precise instrument, house electronical appliance, sapceecraft automobile and micromechanism
超聲波電機（ ultrasonicmotor ）是近二十年來發展起來的一種新原理電機，其原理不同於傳統的電磁型電機，它是利用壓電陶瓷的逆壓電效應使定子的表面質點產生橢圓運動，通過定子和轉子之間的摩擦力驅動轉子運動。這種新型的電機與傳統電磁電機相比，具有響應快、不受電磁干擾、結構緊湊、低速、大扭矩、斷電自鎖等優點，因而在微型機械、機器人、精密儀器、家用電器、航天器、汽車等方面顯示出廣泛的應用前景。Finally, at long ranges, the blast wave becomes essentially a sound wave and its velocity approaches ambient sound velocity.
最後，在很遠的距離處，爆震波基本上就變成一種聲波，其速度已接近周圍的聲速。With the development of power electronics technology and devices in recent years, instead of using the industrial frequency transformer to boost voltage, dc / dc high frequency converter achieves the function. the system has higher power density and conversion efficiency, and the size, weight, ac noise of which has been greatly reduced
近年來，隨著電力電子技術與器件的迅速發展，使用dc dc高頻變換技術代替工頻升壓，系統具有較高的功率密度與轉換效率，裝置體積、重量與交流噪聲大大減小。In this paper, taking the measured error sound velocity profile as the initial guess value, the sound beam travel times and beam angle recorded by the multi - beam system and the generalized linear inversion method are used to get a sound velocity profile close to the actual sound velocity profile, and the inversed sound velocity profiles have contributed to the reduction of sound velocity profile error
摘要以測得的誤差聲速剖面作為初始猜測值，利用多波束記錄到的波束傳播時間和波束角等信息，通過廣義線性反演得到一個與實際聲速剖面比較接近的聲速剖面，這有助於減少聲速剖面的誤差。The dolphins could be shy and easily startled by loud boat engines or by boat traffic that approaches them quickly and directly
海豚生性害羞，容易因船艇快速接近嘈雜的引擎聲及頻繁的船艇交通驚嚇。Lagrange wave speed in the release process was computed from the measurement, and result shows a good agreement with the data in literature. furthermore from the lagrange wave speed, the stress - strain relationship in the release process was calculated using the impedance match solution. comparison of the stress - strain with the fluid elastic - plastic model indicates that ofhc copper exhibits a clear work - harden behavior during the release
根據界面粒子速度剖面，計算得到了卸載過程中lagrange聲速隨界面粒子速度變化的關系，所得結果與文獻給出的數據符合很好；其次，利用阻抗匹配近似，計算分析了無氧銅卸載過程的應力-應變關系，並與流體彈塑性模型進行了比較，結果表明：無氧銅的卸載過程存在明顯的應變硬化效應。For the case of a doppler radar, the faster the raindrops move towards the radar, the higher will be the frequency i. e. pitch of the microwave reflected from raindrops fig. 1
多普勒雷達利用同一原理：雨點移近雷達的速度越快，反射回來的微波頻率即聲調就越高圖1 。Lt is obvious that the decaying rule of average reverberation intensity is affected by scattering coefficient of sea floor, sound speed profile, inclination of bottom etc. the sea floor scattering function is the most importan factor to the intensity decaying rule
結果表明：海底散射方向性指數因子、海水聲速梯度、海底傾斜角等對海洋混響平均強度的衰減皆有影響。海底散射方向性指數因子對其影響最大，即適當選取海底散射模型是淺海近程混響建模的首要因素。Test method for sonic velocity in manufactured carbon and graphite materials for use in obtaining an approximate young s modulus
獲取近似楊氏模量用人造碳和石墨材料中聲速的試驗方法Better agreements between computation results and experimental data were found using the models. ( 4 ) two phenomena in straight - convergent - divergent - straight microchannels were identified, which are different from the macroflow through experimental studies. one is that the first appearing sonic point position in microchannels is not near throat cross - section
（ 4 ）對等直收縮擴張等直微管道中氣體流動的實驗研究發現兩個特異現象：其一為微管道內最早出現聲速點的位置不一定在喉部附近，其二為微管道中的臨界壓比與常規值有很大差別。In this study a primary method for designing a waverider configuration is developed based on the approximate solution of conical flow fields. the simplified cone - derived shock wave is discussed as the basic model for design. different shapes designed from different compression angles and basic geometric coefficients at the same mach number are put into analysis
本文基於高超聲速條件下錐型流近似解提出了高超聲速乘波構形的初步設計方案，對于不同馬赫數、壓縮角以及幾何設計參數進行了外形設計並就參數對設計外形的影響進行了討論，得到了設計參數影響外形的基本規律。We have accumulated a team consist of famous experts, designers and engineers who are plenty of experiences in the lines - making for paper machine, most of them have experiences around 40 years, special in small, medium shape and speed models
優秀的團隊和極富經驗的專業人才，積累了近40年的紙機生產經驗，無論小型紙機，還是中型中速紙機，我們在技術和質量上都有獨到之處，產品在行業中享有較高聲譽。In recent several decades, ultrasonic phased arrays had been applied to many medical specialties and nondestructive evaluation ( nde ). an ultrasonic phased array consists of multiple elements which are usually cut or etched from a single piezoelectric plate of lead zirconate titinate ( pzt ). the element thickness determines the operating frequency of the transducer
近年來，隨著科學技術的飛速發展，超聲相控陣已廣泛的應用在醫學、無損檢測等方面，所謂相控陣，就是由多個壓電陶瓷片（陣元）按一定的分佈排列，然後逐次按欲先規定的延遲時間激發，就可以實現聲波的聚焦。Standard test method for sonic velocity in refractory materials at room temperature and its use in obtaining an approximate young ' s modulus
室溫下耐火材料中的聲速及聲速在測量近似楊氏模量中的應用的標準試驗方法( 2 ) before and after the frames are placed the velocity vertical distribution in the same cross - section are measured by adv. the results indicate that after the frames are placed the mean velocity and turbulent intensity near bed are reduced, and vertical distribution of turbulent intensity is more uniform
（ 2 ）採用adv超聲流速儀對投放框架群前後同一斷面的垂線流速分佈測量表明：水槽投放四面體后，不但可以降低近底區的時均流速、紊動強度，而且均化了紊動強度的垂線分佈。The advantages and design requirements of inlets have led to study of inlet ’ s starting characteristics
近年來，高超聲速進氣道不起動問題越來越引起人們的重視。Then nearness rough membership function based on nearness relationship rough sets are defined and its properties are investigated. as a rough factor, nearness rough membership function is integrated into a kind of neural networks. and the new neural network can decrease the influence of noise and make it convergent rapidly
本文在相近關系的基礎上，提出了衡量粗糙隸屬度的方法，研究了該函數的性質，利用隸屬度函數作為粗糙因子設計了粗糙因子神經網路，可減小噪聲污染的影響，並使網路的收斂速度得到提高。分享友人