等體積波 的英文怎麼說
中文拼音 [děngtǐjībō]
等體積波
英文
equivoluminal wave-
This clearly indicates that uniqueness is reached provided that the irrotational and equivoluminal wave velocities, and are real and nonzero.
這就清楚地表明,如果無旋波速度和等體積波速度是不等於零的實量,則唯一性是成立的。< uk > this clearly indicates that uniqueness is reached provided that the irrotational and equivoluminal wave velocities, and are real and nonzero. < / uk >
< uk >這就清楚地表明,如果無旋波速度和等體積波速度是不等於零的實量,則唯一性是成立的。 < / uk >The experimental result expresses that the frequency doubler - power amplifier sets of ka - band can supply good local oscillation source for " millimeter - wave front - end of " lmds " ". the model has the advantages of low cost, small size and high reliability
實驗結果表明,倍頻放大組件能夠為lmds毫米波前端提供很好的本振源,並且具有成本低、體積小、可靠性高等優點。Szkx series possesses distinguishing features of small, light weight, well respondence, good overloading capacity, low noise, small vibration, wide speed range and small ripple at low speed
本電動機具有體積小、重量輕、動作響應快、過載能力大、噪音振動小、調速范圍寬、低速波動小等特點。All sorts of imperceptible factors making the system get worse, including the harmonic of the inverter and magnifying of dv / dt over long cable and the effects after applying the inverter. i applied the three - level main circuit structure to the esp system, so that the high voltage problems resulted by low endureing voltage can be solved, at the same time avoided the voltage distributing because of devices in series
為此本文將三電平主電路結構運用到潛油電泵變頻系統中,以解決由於當前器件耐壓較低而要求實現中高壓問題,同時避免了由於器件串聯而引起的均壓問題,具有諧波含量較二電平變頻器要低和體積較低壓單元串聯方式要小等特點。As novel concept actuators, ultrasonic motors have been attracting intensive attention at home and abroad with their outstanding features such as low speed and high torque, large holding torque, rapid response, light weight and compact sizes, simple structure, and no magnetic disturbance, etc. traveling wave ultrasonic motors are especially attracting researchers ’ interest for their good controllability and flexible constructions
超聲波馬達作為一種全新的驅動器,以低速大轉矩、靜態保持力矩大、響應速度快、體積重量小、結構簡單以及無磁場干擾等優點受到國內外的廣泛關注,其中行波超聲波馬達以其控制性能良好和結構靈活等優點尤為引人矚目。For parameter a, there is a close relationship exist between a ( 9, sr ) in two different radar incident angle that can be expressed as : with considering the effects of soil texture, we get the final expression of the inversion model : where mv ( t1 ), mv ( t2 ) is volumetric soil moisture content in two different temp, c, d is soil type related parameters, and v ( t1 ), s ( t2 ) is coresponding bare soil radar backscattering coefficients. inversion results show that for the c band hh polarized radarsat scansar data with a range of incidence angle from 20 to 40, the soil moisture change value can be derived with an acceptable accuracy using the above model. the temporal and spatial soil moisture change patterns are associated with rainfall and vegetation cover, as well as the soil hydraulic characteristics
利用最新發展的電磁波散射模型研究了不同植被覆蓋地表雷達波對地表土壤水分的敏感性,建立了半經驗植被雷達後向散射模型; 2 ) .研究發現在農作物等矮小植被覆蓋地表,植被層直接後向散射與植被類型相關,且在植被生長期,雷達後向散射系數對植被含水量的敏感性要高於對植被高度變化的敏感性; 3 ) .解決了單參數雷達地表土壤水分反演問題中,雷達入射角和地表粗糙度的影響這一難點問題; 4 ) .利用土壤介電模型校正了不同土壤類型對反演地表土壤體積含水量的影響; 5 ) .在以上成果基礎上,建立了完整的單參數雷達地表土壤水分變化探測反演演算法,經地表驗證,模型反演地表土壤水分變化值的精度為rmse = 0As novel concept actuators, ultrasonic motors have been attracting intensive attention at home and abroad with their outstanding features such as low speed and high torque, large holding torque, rapid response, light weight and compact sizes, simple structure, and no magnetic disturbance, etc, and which have been applied to many fields
超聲波電機作為一種全新的驅動器,以低速大轉矩、大靜態保持力矩、響應速度快、體積重量小、結構簡單以及無磁場干擾等優點受到國內外的廣泛關注,並在眾多領域得到了應用。其中駐波超聲波電機具有驅動和控制電路簡單,轉速平穩,波動較小等突出優點。Although the flux per revolution of the optimized pumps is a little smaller than that of tatsuno combined pumps, other characteristics, such as fluctuation rate, maximum pressure angle and velocity fluctuation rate etc, are much better. the methods to cut gears are proposed in the theory for the practical produce in the future
雖然,在體積相等的條件下,優化出來的外圓弧包絡線內嚙合齒輪泵的排量略小於tatsuno組合泵的排量,但其它性能(如:流量脈動率、最大壓力角、速度波動量)都更優。Using piezoresistive accelerometers and magnetoresistance sensors measure the dynamic acceleration and geomagnetic field and through avr mcu software to calculate the attitude angular and azimuth. the fact of affecting the module is discussed in detail in this report and put forward the resolving scheme of key technology of digital filter, linear compensation, temperature compensation and magnetic field adjustment. the digital module has advantages of small size, light weight, low conception, high accuracy, all solid state and high reliability
本課題採用壓阻式加速度計和磁阻傳感器分別測量重力加速度和地磁場,通過avrmcu軟體解算出姿態角和方位角,課題詳細分析了影響模塊性能指標的因素,就數字濾波、線性補償、溫度補償、磁場修正等關鍵的技術問題提出了可行的解決方案,研製的數字化模塊具有體積小、重量輕、低功耗、精度高、全固態、高可靠等特點,所有性能指標均滿足設計要求,為姿態角測量提供了有效的手段。Be aimed at the characters of fluvial layered pool, such as serious intrastratal and interlayer heterogeneity, small water flooding volume and low oil displacement efficiency in its high water - cut stage, the fine research work on reservoir heterogeneity model are carried out, and the research is done on the base of geological, logging, production testing materials and production date and with a center of the research of remaining oil. the west 7th block, gudong oilfield is in case. the forming mechanisms of remaining oil and its distributing feature in this area are revealed
本文針對我國陸相沉積層狀油藏層內及層間儲層非均質性嚴重、高含水期水驅波及體積小、驅油效率低等特點,以剩餘油研究為中心,藉助于數學地質統計及聚類分析等方法,綜合利用孤東七區西的地質、測井、生產測試資料和生產動態信息等,深入開展了儲層非均質模型的精細研究,揭示了在不同規模非均質模型上剩餘油的形成機理和分佈特徵。The microwave delaylines using hts thin films have the advantages of small size and mass and low insertion lose. these characters are much better than the delaylines using surface acoustic wave, coaxial - line, magetostatic wave or conventional metal planar structures. these merits benefit a lot in largely reduction the mass and volume of communication systems
利用高溫超導( htsc )薄膜材料研製的微波延遲線具有體積小、重量輕、插損小等優點,這是利用聲表面波、同軸線、靜磁波或常規金屬平面結構設計的延遲線所無法比擬的。這些優點對于減輕通信系統的重量和縮小體積都是非常有利的。A data acquisition and analysis system of insect acoustic signal ( daasias ) with friendly interface, simple operation and multifunction was developed. it could sample and analyze insect acoustic signals in real time. by daasias both observing insect behavior and analyzing signal could be conducted at the same time
以往昆蟲鳴聲信號是記錄在磁帶上,分析時通過回放磁帶的錄音,在示波器、頻譜儀或聲譜儀等聲學儀器上進行信號分析,結果磁帶的多次回放常會引起信號的失真,並難以對信號作進一步的編輯處理;分析儀器不但價格昂貴、體積較大,而且很難實現昆蟲聲行為觀察與信號分析同步,更不適合野外工作。Direct modulator converts baseband signal to rf signal without upconvertion. the system design is relatively simple compared to upconversion. so direct modulator provides adventages of compact size, low cost and low spurious response
直接調制將基帶信號直接轉換為射頻信號,不需要二次頻率變換,與上變頻方式相比系統結構簡單,降低了對濾波器的要求,具有體積小,重量輕,成本低等明顯的優點。Through analyzing the effect of temperature and nitrogen on crude oil viscosity the influences of different nitrogen injection volume and injection modes on steam displacement are contrasted, the mechanism of nitrogen - assisted steam stimulation is clarified, which includes : heat carrying capacity is raised, the saturation of remaining oil is reduced after nitrogen - assisted injection is made ; crude oil flow is enhanced because of nitrogen compression and dispersion and the change of oil flow shape ; water back - production rate is improved by expanding the steam sweep volume and compensating in - situ energy ; steam distillation effect is enhanced
通過分析溫度、氮氣對原油粘度的影響,對比不同注氮量、不同注入方式等對蒸汽驅油效果的影響,弄清了氮氣輔助蒸汽增產的機理主要表現在:氮氣輔助后增加攜熱能力,降低殘余油飽和度,氮氣的壓縮膨脹作用分散和改變了原油流動形態,增強了原油流動性;擴大蒸汽的波及體積,補充地層能量,提高回採水率,強化蒸汽蒸餾效應。The rf discharge excited waveguide co2 laser has been the suitable light source of lidar, because of its low volume, high efficiency and the particular wavelength
由於射頻激勵波導co _ 2激光器體積小、效率高、調諧范圍寬、波長正處于大氣透射窗口等獨特優勢,它已成為激光雷達等應用的理想光源。According to different water phenomena, we use two different method to produce waves source : the first method is by specifying the boundary conditions and initialization conditions, this method simulate the dam breaking, reflection and diffraction of water waves ; the second method is by specifying disturbance model, this method simulate water droplets, waterfall, waves of ship ; in the first part of this thesis, we discuss the prevalent methods of the simulation of water scenes, in the second part of this thesis, we describe the numerical methods of solving the shallow water equations using the finite difference method and the finite volume method respectively, in the third part of this thesis, we simulate some realistically liquid phenomena such as rain droplets, the waves of ship, dam breaking etc
產生水波首先要有波源,設置不同的波源便可以得到不同的水流情形,我們用兩種方法來產生波源:一種是通過設置邊界條件和初始條件產生,這種方法用於模擬潰壩波的反射、折射等現象;另一種是通過擾動控制產生,這種方法用於模擬雨滴、瀑布、船波等自然現象。本論文的第一部分我們討論了目前水動畫模擬常用的幾種方法;在第二部分討論了我們所使用的兩類數值方法:有限差分方法和有限體積方法;在第三部分我們模擬了雨滴、船波、潰壩波等一些水流現象。Linear frequency modulated continuous wave ( lfmcw ) radar has many characteristics of simple structure, small volume, light weight, low cost, low transmitter peak power, short wavelength, thus it is especially suitable to be used in radar image, research of target characteristic, end control and guide, battlefield spy, scene watch etc. and more people in the world interested in it, it will have a wide prospect
線性調頻雷達具有結構簡單、體積小、重量輕、造價低、發射峰值功率低、波長短等一系列優點,特別適合於雷達成像、目標特性研究、末制導、戰場偵察和場面監視等領域,目前已受到國內外的廣泛重視與研究,應用前景十分誘人。The substrate integrated waveguide borrow advantages of both of the rectangular waveguide and the microstrip, such as : high q, low loss just like rectangular waveguide ; small size, low profile, low cost, easy to be integrated like microstrip
它綜合了矩形波導和微帶線的一系列優點:和傳統的矩形波導一樣集成波導具有較高的品質因數和很小的輻射損耗;而它又和微帶線一樣具有體積小、重量輕、容易加工和集成等優點。In the way based the scientific and tecdrical talks on i presided at and panicipated in, the graduation theis included a p1entful thets in recent years wtll be divided into three parts for depiction conxteniently and clearly, according to the content as fo1lowsf ( l ) the study of shock compression properties with the drixtiir - liquid co and n, experimentally ( 2 ) the study of the phenomenon of excess heat produced by deuteriurn atoms entering into the lattice of titaluxn experimentally ( 3 ) the calcujation for the electronic structure and energy of hydrogen atoms cluster ffi. the mainstream in the first part of the paper is to exposure some experimental tecndques in high pressure and high temperatur shock compression physics, including by using a cryo - target cooled down circulating steaxned n, to condense the well - proportioned mixed liquid sample from pure gas co and n = with equal molar voiurne
根據近幾年所承擔和參加的科研任務,將研究成果總結寫成的論文按以下三個部分敘述: ( 1 )液體co和n _ 2混合物沖擊壓縮特性的實驗研究(由國防科技重點實驗室基金項目96js75 . 2 . 1 . jw1902資助) ( 2 )重氫原子進入鈦晶格中引起過熱現象的實驗研究(由國家自然科學基金10145002資助) ( 3 )氫原子團簇h _ 9的電子結構與能量計算第一部分以高溫高壓沖擊波物理實驗為主,採用自行研製的低溫循環汽冷靶冷凝制樣技術由高純co和n _ 2氣體獲取等摩爾體積均勻混合的液體沖擊初態樣品。分享友人