無反射區 的英文怎麼說
中文拼音 [wúfǎnshèqū]
無反射區
英文
reflection-free areas-
Conclusion the lymphography yielded high resolving images and positive rate, which has a guide significance to lateral clearance and paraabdominal aorta clearance of the lymph node
放射性核素淋巴顯像,顯示淋巴區域廣泛,操作簡單,無並發癥,但缺點是顯示圖像粗略,反映一組淋巴結圖像,缺乏特異性。The maximum of instantaneous global radiation is beyond 1000w / m2 and the ten - days average intensity is 338. 90w / m2 because of high atmospheric transparency over semi - arid rainfed agriculture region of loess plateau between june and august. global radiation, reflected global radiation and surface long wave radiation emerge the characteristic of daily variations on a typical clear day and cloudy day, whereas atmospheric long wave radiation has not this characteristic. meanwhile, net radiation, latent heat flux sensible heat flux and soil heat flux appear the same characteristic as the mean daily variations above spring wheat field and bare soil on a typical clear day and cloudy day
黃土高原半乾旱雨養農業區夏秋季大氣透明度較高,晴天地面的總輻射值最大瞬時值均超過1000w m ~ 2 , 6 8月總輻射旬平均強度為338 . 90w m ~ 2 ;典型晴天和陰天總輻射、反射輻射、地表長波輻射均表現出明顯的日變化特徵,而雨天沒有明顯的日循環規律;無論是晴天、陰天還是雨天,大氣長波輻射基本沒有明顯的日變化規律。A range in relation to an optical system, such as a camera lens, representing distances great enough that light rays reflected from objects within the range may be regarded as parallel
(聚焦區)無限遠與光學系統(如照像鏡頭)有關的一個范圍,表示距離是如此之遠,以至於從在這一距離的物體上反射回來的光可以視為平行光線In an urban environment where there are numerous reflections, the adaptive array can receive from and transmit to a small area surrounding the phone
在具有無數反射訊號的都會環境中,適應型陣列可針對電話周圍的小區域收發訊號。The land clutter is useless signals for target detection caused by land terrain. the multipath effect is some kind of interference which is caused by wave reflection on terrain. the diffraction effect is the phenomenon of wave propagation into shadow region
地雜波是由地面散射引起的對目標探測無用的信號;多路徑是由電磁波在地面反射所引起的干涉;衍射則是電波繞射傳播到遮蔽區的現象。It was found that many dislocations were emitted from the crack tip during the early stage of crack propagation and were driven out of the crack tip area, and them piled up inversely. a closed dislocation free zone ( dfz ) was formed between the crack tip and the pile - up dislocations. keeping displacement constant, the dislocations were still emitted from the crack tip for a while
本文首先系統地研究了工業純金屬( fe , al , ti和mg )斷裂的微觀過程,發現所研究的工業純金屬斷裂過程裂尖均首先發射位錯,並離開裂尖向前運動、在裂尖留下無位錯區,位錯反塞積在五位錯區的端部,反塞積位錯群一般呈封閉狀包圍無位錯區。The width of stacking fault increased as partial dislocations move forward. in the fracture of 18 - 8 stainless steel, many dislocations were emitted from the crack tip during the early stage of crack propagation and moved forward, and then a dfz was formed between the crack tip and the pile - up dislocations. the dfz is an elastic zone
不銹鋼斷裂時,裂尖首先發射位錯,並離開裂尖向前運動,裂尖前方留下無位錯區,位錯反塞積在無位錯區的端部,無位錯區是應變很高的異常彈性區,隨著裂紋的擴展,無位錯區逐漸發生晶體碎化和轉動。Keeping displacement constant, the length of dfz decreased. the less the lattice resistance is, the longer the dfz is. during the crack propagation, the pile - up dislocations may move forward in the previous direction or in another direction which caused shape of dfz changed. the dislocations emitted from the crack tip might pile up in the dfz and can be served as dislocation source in the successive loading
在裂紋擴展過程,反塞積位錯群發生變化,可以沿原來方向繼續向前運動,也可能改變運動方向使無位錯區的形狀發生變化,后來發射出的位錯可以在原五位錯區中塞積,並可作為位錯源在後續的加載中發射位錯。As a new mechanism of producing laser, lwi can produce laser in the fields that it is very difficult even impossible to get laser ( x or even r spectrum ) using the traditional methods. so nowadays it has attracted the interest of a lot of people
作為一種產生激光的新型機制,應用無反轉激光可以在應用傳統激光理論和方法很難甚至不可能產生激光的高頻光譜區( x -射線甚至-射線區)產生激光,因此近年來引起人們的很大興趣。Compared with conventional methods, the proposed method is not disturbed by reflected waves from tee joints or other resistance discontinuities, and is not influenced by fault type, and can recognize the reflected wave from the fault point even when the fault point is near to the measuring terminal ( so - called dead - zone ), and simultaneously, the method reduces the influence of wave speed uncertainty
與傳統的行波測距方法相比,這種方法不受電纜分支接頭或其他阻抗不匹配點反射波的干擾,不受故障類型的影響,在近區也不存在無法識別反射波的問題,同時也減少了波速不確定性對測距精度的影響。? he can produce different types of reaction in the gap test, in which he is impacted by shock ( about 2gpa ) and undergoes smaller deformation relative to susan test, including no reaction, mild reaction, reaction termination, deflagration, detonation
經歷較小變形的炸藥在入射壓力變化很窄的區間內分別呈現了不同烈度的化學反應,即從無反應、溫和化學反應、反應中止現象、爆燃、爆轟反應,此區段應是進一步研究的重點。In this pattern a new kind of infinite boundary element is developed to reduce wave reflection on the boundary. by this method, a simple and convenient numerical way is worked out and dissipation of the pore press, damping can be taken into account. it can not only solve the problem of material nonlinearity, but also be suitable for the problem of large deformation
考慮到反射波在計算區域內經多次反射、透射和散射對計算結果可能產生較大的影響,在上述飽和砂土有限元模型的基礎上,建立了一種新的動力無限元計算模型,該模型能滿足工程計算的要求。The merits of single terminal fault location are its reliability and its accuracy is n ' t affected by the type of line, fault resistance and two sides systems theoretically but this method has problems such as the identification of reflection wave and the unidentifiable area of reflection nearby which are research purpose and core of this paper
單端行波故障測距方法的優點是其可靠性和精度在理論上不受線路類型、故障電阻及兩側系統的影響,但單端行波故障測距方法存在反射波的識別問題,且在近區還存在無法識別反射波區域。這就是本文的研究目的和中心。We use non - physical exit zones ( pml buffer zones ) together with thompson ' s non - reflecting boundary conditions to set the boundary schemes
非物理的出口區( pml緩沖區)方法結合thompson無反射邊界條件被用於邊界條件的設置。分享友人