早期反射 的英文怎麼說

中文拼音 [zǎoqīfǎnshè]
早期反射 英文
early reflections
  • 早 : Ⅰ名詞1 （早晨） morning 2 （姓氏） a surname Ⅱ副詞（很久以前） long ago; as early as; for a long ...
  • 期 : 期名詞[書面語]1. （一周年） a full year; anniversary 2. （一整月） a full month
  • 反 : Ⅰ名詞1 （方向相背） reverse side 2 （造反） rebellion 3 （指反革命、反動派） counterrevolutionari...
  • 射 : Ⅰ動詞1 （用推力或彈力送出） shoot; fire 2 （液體受到壓力迅速擠出） discharge in a jet 3 （放出） ...
  • 早期 : early stage; early phase; prophase （細胞分裂）
  1. Early introduction and studies on the western double reflecting octant in china

    中國早期對西方雙反射八分儀的介紹和研究
  2. At the initial stage of planar technique, b was employed as ideal diffusion impurity in base - region of npn si planar devices because of the match of its solid - solubility and diffusion coefficient in si with those of p in emission - region, and the good shield effect of sio2 film to b. but because of the relatively large solubility ( 5 1020 / cm3 at 1000 ) and the small diffusion coefficient, the linear slowly - changed distribution of acceptor b in pn junction can not be formed, which could not cater to the requirement of high - reversal - voltage devics. thereafter b - a1 paste - layer diffusion technology and close - tube ga - diffusion technology had been developed, while the former can lead to relatively large the base - region deviation and abruptly varied region in si, which caused severe decentralization of current amplification parameter, bad thermal stability and high tr ; the latter needed the relatively difficult pack technique, with poor repeatability, high rejection ratio, and poor diffusion quality and productio n efficiency

    在平面工藝初期，由於b在硅中的固溶度、擴散系數與n型發射區的磷相匹配， sio _ 2對其又有良好的掩蔽作用，早被選為npn硅平面器件的理想基區擴散源，但b在硅中的固溶度大（ 1000時達到5 10 ~ （ 20 ） ，擴散系數小， b在硅中的雜質分佈不易形成pn結中雜質的線性緩變分佈，導致器件不能滿足高反壓的要求，隨之又出現了硼鋁塗層擴散工藝和閉管擴鎵工藝，前者會引起較大的基區偏差，雜質在硅內存在突變區域，導致放大系數分散嚴重，下降時間t _ f值較高，熱穩定性差；後者需要難度較大的真空封管技術，工藝重復性差，報廢率高，在擴散質量、生產效率諸方面均不能令人滿意。
  3. The present studies aimed to find the responses of neurons and glias in the target and other brain areas of the linear accelerator - irradiated rats. in the first experiment, time - dependent neurons changes in the brain after hemispheric irradiation at an single - fraction maximal dose of 20 gy were observed by investigating the expression of an immediate early gene, fos protein. the results shown : compared with that of the un - radiated rats, the expression of fos protein in the irradiated brain decreased distinctly 24 hours and 1 week after irradiation

    首先，利用即刻早期基因fos的表達，做了同一照射劑量（ 20gy ）照射大鼠半腦后不同存活期間（ 1d ， 7d ， 14d ， 2ld ， 28d ）大鼠全腦神經元動態變化的觀察，發現：受照射后1d 、 7d大鼠腦內各部位fos蛋白表達均明顯減少，隨著時間的延長，其fos免疫反應性細胞數量逐漸增加，照射后28d ，延髓、第四軍醫大學碩士學位論文腦橋內hs免疫陽性細胞數量恢復並超過正常對照組水平，但中腦、間腦及端腦內未恢復到正常對照組水平。
  4. Through examining the detection results of radiation damage, we validated the character of this analyzer and developed it

    並且利用該儀器通過對輻射損傷性的早期、快速檢測的試驗結果反饋回來驗證該儀器的性能，並加以改進。
  5. Erf early reflection

    早期反射聲
  6. Firstly, this article puts forward three acoustic evaluative parameters that the good acoustics should guarantee : reverberation time, early reflected sound, sound coloration, after the analysis of the particularity of the acoustics space in living room on the basis of theoretical research

    論文首先在理論研究的基礎上，分析了起居室聲學空間的特殊性，提出保證良好的聲環境所需的音質評價參量：混響時間、早期反射聲、駐波和聲染色。
  7. Early radiative reaction in middle ear mucosa of the guinea pigs : a study with scanning electron microscope

    豚鼠中耳黏膜早期輻射反應掃描電鏡研究
  8. Reflection cracking is the main cause for early deterioration of bituminous concrete overlays, and therefore its prevention is an important consideration in the design of overlays

    反射裂縫擴展是瀝青混凝土罩面早期破壞的主要原因。因此在罩面設計中，預防和阻止反射裂縫的擴展是需要考慮的一個重要問題。
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