selective reduction 中文意思是什麼

selective reduction 解釋
選擇還原
  • selective : adj. 1. 選擇的；挑選的；有選擇性的；淘汰的。2. 【無線電】選擇性的。adv. -ly
  • reduction : n 1 縮小，減少；降級，降位；（刑罰等的）輕減；減速；減價，折扣。2 （城市、國家等的）陷落，投降，...
  1. This last problem has created its own macabre solution : selective " reduction " or " deletion " ( as if they were unwanted emails, maybe ) of embryos

    這個最後的難題產生了它自己的令人毛骨悚然的解決辦法：晶胚有選擇地「減少」或者「刪除」 （可能就像不受歡迎的電子郵件） 。
  2. Preparation and performance of cu2 - ti - pillared montmorillonite modified by so2 - 4 for selective reduction of no by propene under lean - burn condition

    改性鈦交聯蒙脫催化劑的制備與性能
  3. Thereby this paper puts forward four ways to reduce no, emissions : reduction of the highest combustion temperature, fuel emulsification, exhaust gas recirculation and selective catalytic reduction. according to the marpol convention, no, emissions are defined as per engine power of nox mass flow rate

    Marpol公約附則規定的no _ x的排放標準為柴油機單位制動功率排氣中no _ x的質量流量（單位： g kw ? h ） ，因此要想對被測試的柴油機的no _ x排放進行判定，必須得到排氣中no _ x的質量流量和柴油機的制動功率。
  4. Methods 3, 3 - bis ( dibenzyloxyphosphoiyl ) propionic acid ( 5 ) and ( 6 ) were synthesized from tetraethyl methylene bisphosphonate via hydrolysis, chlorination of the acid, esterification, condensation, then 3, 3 - bis ( dibenzyloxyphosphoryl ) propanol ( 6 ) was obtained via selective reduction of ( 5 )

    方法以亞甲基偕二膦酸四乙酯（ 1 ） ?原料經水解、氯膦酰化、酯化、縮合得3 ， 3二（二芐氧膦酰基）丙酸（ 5 ） ，隨后選擇性硼氫化還原得3 ， 3二（二芐氧膦酰基）丙醇（ 6 ） 。
  5. For stationary sources, meca members include manufacturers of selective catalytic reduction ( scr ) systems, non - selective catalytic reduction ( nscr ) systems, diesel particulate filters, and catalytic oxidation systems

    關于固定源，成員為選擇性催化還原系統、非選擇性催化還原系統製造企業，柴油顆粒過濾器、催化氧化系統生產商等。
  6. Tert - butyl hydrazine ( tbh ) is a kind of hydrazine derivatives. the preliminary research results show that tbh can effectively reduce np ( vi ) to np ( v ). what ' s more, among all hydrazine derivatives ever reported in literature, the ratio of the reaction rate constants of np ( vi ) reduction by tbh to that of pu ( iv ) reduction by tbh is the most largest, thus it has been considered as one of promising selective reductants

    研究結果表明，該類化合物是具有一定應用前景的還原劑。特丁基肼（ tbh ）屬于肼類衍生物。初步研究表明，特丁基肼不僅能有效還原np （ ）到np （ ） ，而且在所有報道過的肼類衍生物中，還原np （ ） 、 pu （ ）的速率差別最大，被認為是最有前途的選擇性還原劑之一。
  7. The research on the feasibility of the selective catalytic reduction of nox in power plant

    火電廠選擇性催化還原脫硝技術的可行性研究
  8. Urine ? separate determination of organic, inorganic and total mercury ? selective reduction cold atomic absorption spectrometric method

    甲基）汞、無機汞和總汞的分別測定方法選擇性還原-冷原子吸收光譜法
  9. Otsuka chemical employs an electro - organic synthesis which is a method for easily controlling oxidation - reduction reactions and is applied to selective oxidation reactions, unique reductive reaction and special alkylation of aromatic side chains

    大冢化學的各種芳香族化合物在精細化工領域內，作為醫藥中間體、農藥中間體和功能性高分子原料，是具有各種各樣用途的化合物。
  10. Selective catalytic reduction of no with c3h6 over sno2 - al2o3 binary metal oxide catalysts

    3復合氧化物催化劑的一氧化氮選擇催化還原性能
  11. Japanese patients physical decline, be selective reduction, weight loss and weak, can be associated with fever, anemia obvious, or even awareness of fuzzy, sepsis occurred but rarely see

    患者體力日衰，胃納減少，消瘦無力，也可伴發熱，明顯貧血，甚至意識模糊，但發生敗血癥者很少見。
  12. Spread spectrum technique, which can handle variable adverse environments, exhibits unique qualities that have a number of advantages in anti - jamming, anti - noise, reduction of multi - path interference, low power spectral density, privacy, selective addressing and code division multiplexing

    擴頻通信技術具有優越的抗干擾、抗噪音、抗多徑衰落性能，能在低功率譜密度下工作，具保密性、可多址復用和任意選址，能有效克服各種惡劣的通道特性，目前廣泛應用於移動通信、雷達、導航、測距、電力線通信等領域。
  13. Selective catalytic reduction, scr

    選擇性催化還原
  14. Space - time block codes ( stbc ) based on orthogonal design has attracts enough attentions in its applications in mimo - ofdm systems for its full diversity exploiting and low coding / decoding complexity. these applications include not only system performance improvement, but also reduction of the peak to average power ratio in mimo - ofdm systems. under these backgrounds, this paper first studies space - time block codes under the single carrier, flat fading situation, discusses the encoding / decoding principle and its performance under different channels. then, the author focused on the performance of space - time codes under time selective and frequency selective channels, uncovered the fundamental cause of how maximum doppler shift and power delay profile influences the performance of space - time codes through deduction and simulation

    在上述背景下，本文以單載波，平坦衰落通道下的空時分組碼為切入點，深入分析了其編譯碼原理和在不同通道情況下的性能;以此為基礎，後文展開了對空時分組碼在多載波，時間選擇性和頻率選擇性衰落通道下的性能研究，通過理論推導和充分的模擬，揭示了空時/頻分組碼在時頻選擇性衰落通道中的性能變化的根本原因;在以上對多載波系統中空時分組碼的研究的過程中，作者發現了空時分組碼在降低系統峰平比方面應用的可行性，提出了一種降低峰平比的新方法。
  15. Pcba is a distributed algorithm which boasts no extra communication overhead. the merits of pcba are : significant reduction of rebroadcast redundancy, adaptivity, " selective rebroadcast " function and easy implementation

    首先，提出了基於優先權指數的競爭廣播演算法：採用分散式計算，不需增加額外通信負荷，既適合於純廣播應用，又可應用於路由協議。
  16. At this part, it firstly comes up with a quasi - static frequency selective fading channel model. based on this channel model, considering about the characteristics of the model and the lattice reduction complexity, we proposed a new detection strategy, which is the lll detection algorithm combined with decision - feedback technique

    首先提出了準靜態頻率選擇性多徑通道模型，然後基於該模型提出了一種新的用於準靜態頻率選擇性通道的檢測方案，即與判決反饋相結合的格約簡輔助檢測方案。
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