選擇譜 的英文怎麼說

中文拼音 [xuǎnzháipǔ]
選擇譜 英文
select spectrum
  • 選 : Ⅰ動詞1. （挑選） select; choose; pick 2. （選舉） elect Ⅱ名詞（挑選出來編在一起的作品） selections; anthology
  • 擇 : 擇動詞（挑選） select; pick; choose
  • 譜 : Ⅰ名詞[書面語]1 （按類別或系統編成的書或冊子等） table; chart; register 2 （指導練習的格式或圖形）...
  • 選擇 : select; choose; opt; election; choice; culling; alternative
  1. And then facing the problem of the channel estimation of the adaptive modulation system, we conclude out the channel estimation algorithms on maximum likelihood ( ml ) estimation and maximum a posteriori ( map ) estimation under the condition of flat fading channel and selective fading channel in detail. to meet flat fading channel, we simulate the relationship of the ratio between the error covariance in map estimation and ml estimation and pilot symbol message length. the conclusion can be drawn from these results

    接著，對自適應調制系統中的通道估計問題難點，詳細推導了平衰落通道條件下和選擇性衰落通道條件下最大似然（ ml ）估計和最大后驗概率（ map ）估計演算法，針對平衰落通道，我們模擬了map估計和ml估計的方差與導頻符號長度的關系，模擬結果表明，錯誤方差受多譜勒頻率的變化影響最大，並且對實際的自適應調制系統，導頻符號長度的取值超過20個符號長度時， map通道估計明顯優于ml通道估計。
  2. Antibiotics are somewhat selective in their antibacterial actions.

    抗菌素的抗菌譜略有選擇性。
  3. And understanding and studying the spectral features and variation rules of geo - targets in the experimental area, raising that it is the basis of geo - targets information collection with imaging spectrometer data to understand spectral features and variation rules of geo - targets, realizing that in a great extent spectral - integrated - form - based classification method can remove the phenomenon of " different spectrum with same objects " resulted from reflection ratio curve translation because of the angle change among sensor, targets and observation direction, and the average and variance images can be introduced to solve the problem of two kinds of geo - target with similar spectral forms and much different values of whole reflection ratio. it is suggested that " red edge " range bands of vegetation, which has close relationship with vegetation cover and biomass, is the main characteristic bands and important basis for careful vegetation classification and quantitative retrieval, and pixel - based derivative spectral analysis is very useful for removing the effects of soil background values and quantitatively retrieving vegetation biomass and cover. the remote sense quantitative retrieval model is developed for main appraisable factors of desertification monitoring assessment with imaging spectrometer data and then the applicability of model is analyzed

    研究結果如下：首先針對荒漠化地區的地物特徵，對高光譜數據不同波段的數據質量、波段組合進行了評價，提出了適用於荒漠化監測的基本波段選擇集；初步了解和掌握了研究地區的地物光譜特性及變異規律，進一步明確了掌握地物光譜特徵和變異規律是用成像光譜儀數據提取地物信息的基礎；發現了基於光譜整體形狀的分類方法在很大程度上能夠消除由於傳感器、地物目標觀測方向之間的角度變化引起的反射率曲線整體平移的「同物異譜」現象，對于譜形相似而整體反射率的值相差較大的兩類地物，通過引入均值和方差圖像參與分類得到解決；研究還表明在植被「紅邊」范圍內的波段是進行荒漠化監測的主要特徵波段，這些波段與植被生物量和蓋度都有密切的關系，是開展精細植被分類研究和植被定量反演的重要基礎；像元的導數光譜分析可以消除土壤背景的影響，是進行植被生物量和蓋度定量反演的有力工具；建立了荒漠化監測主要評價因子的定量反演模型，並分析了模型的適用性。
  4. Ppt ( phosphinothricin ) is the active composition of broad - spectrum, non - selective hercicide basta

    廣譜、非選擇性除草劑basta的活性成分是草丁膦（ phosphinothricin ） 。
  5. Multispectral data for bathymetry is often performed in relatively clear shallow waters, up to now, no one use multispectral data for bathymetry in estuary waters of yellow river, where the highest sediment concentration in the world has been observed. in another part of this thesis, multispectral data acquired by landsat - 5 tm and in situ data are used for bathymetry in estuarine waters of yellow river. statistical models based on one band and two bands of tm respectively are developed

    利用兩期水深的比對可以揭示黃河水下三角洲的沖淤演變規律，但由於實測水深資料獲取較為困難，因而利用遙感來反演水深是一個重要的選擇，為此，本文在黃河口海現代黃河三角洲沖淤演變規律與遙感應用研究端走取兩個試驗區進行了多光譜遙感水深反演試驗，試驗結果表明，在極高泥沙濃度、較強水動力條件的黃河口海域，用多光譜遙感反演水深是可行的。
  6. " longdao no. 3 " bred from offspring of " shangyu 397 ( mudanjiang 19 zhongguo 91 ) " through several years ' selection combination of bulk selection method, pedigree selection method and ecosystem selection method

    摘要龍稻3號是從上育397 （牡丹江19中國91 ）的後代經多年運用集團選擇、系譜選擇和生態壓力選擇相結合的方法選育而成。
  7. The method proposed in this thesis do well in solving the problems of multi - damping - ratio - spectra simulation. it is convenient to obtain the pareto optimal solution set of the multi - object question by using implicit parallel genetic algorithms and the method can meet the practical needs for simulating ground motions coinciding with multi - damping - ratio - spectra in seismic design. the crossing rate and variance rate are important parameters of genetic algorithms which affect the rate of convergence, the adapting rate of cross and variation in this paper can auto - adapt and according to stand or fall of current sample, it assures the sample approach to the pareto optimal solution set in fast convergent speed

    較好地解決多阻尼比反應譜擬合問題；本文方法通過一次運行就能獲得一組具有集系特性的地震動，在擬合多阻尼比反應譜的人造地震波集系的模擬方面有傳統方法所不能比擬的優勢，產生的人造波或人造波集系可滿足工程抗震設計需要；在遺傳演算法中，交叉概率和變異概率是影響收斂速度的重要參數，本文採用的改進自適應交叉概率和變異概率，可以根據當前樣本的好壞程度來自動地選擇適當的交叉概率和變異概率，以保證演算法始終以較好的速度向pareto最優解集逼近。
  8. Intense pulsed light with the specific spectrum penetrate cutis, be transformed to heat

    特定譜段的強脈沖光能穿透表皮，被色素團和血紅蛋白有選擇地吸收並轉化為熱能。
  9. Analysis of copper binding protein by sds - page, three main protein bands observed. the main bands were digested by lysyl endopeptidase and isolate different peptides by hplc. 4

    Sds page分析得到3條主要蛋白帶，剪下這三條帶進行膠內賴氨酸內切酶的消化，通過高效液相色譜分離肽段，選擇性進行肽段的氨基酸序列測定。
  10. For this choice, we will turn to the family tree

    要做這項選擇，我們還回到族譜上面。
  11. Filter selection is made using inherent spectra.

    濾色鏡的選擇必須利用固有光譜。
  12. First the author introduces the design of the flame monitoring system based on pic16f877 mcu in details. the detector, ( ecadata company ’ s production ), si - photodiode, is used as the sensor. its photoelectric current output is proportional to input light ’ s energy

    經方案比較，決定選用基於火焰的紅外光譜輻射特性的火焰檢測原理，研製開發火焰監測系統，檢測元件選擇ecadata公司生產的紅外雪崩型硅光電二極體，光電二極體在接受紅外輻射時，其產生光電流的大小與入射光能量成正比。
  13. Study on optimal bands selection of multi - spectral remote sensing data

    多光譜遙感數據最佳波段選擇的研究
  14. Songbook includes melody line with lyrics, guitar chords, and complete transparencies. great for small group, church congregation worship and personal worship

    詩歌譜包含詩歌主旋律，吉他和弦，及投影片。是教會敬拜，短歌，團契，和個人的最佳選擇。
  15. Songbook includes melody line with lyrics, guitar chords, and complete transparencies. great for small group, church congregation worship and personal worship. approx. 90 pages total

    詩歌譜包含詩歌主旋律，吉他和弦，及投影片。是教會敬拜，短歌，團契，和個人的最佳選擇。全本約90頁。
  16. Then, based on above review, we propose an analytical tachyon inflation model driven by scalar field with bom - infeld - type lagrangian. we find it ' s an analytical model if we choose an exponential potential. we compute it ' s power spectrum and find that it can explain the evolution of universe

    如果將勢選擇為指數勢，模型變成精確可解的，本文找到了一個精確解析的宇宙暴漲解並利用該解計算了cmb譜，發現這個解可以用來解釋宇宙的演化。
  17. For protein identification, proteins spots of interest on the gels stained with colloidal coomassie brilliant blue g - 250 were excised, digested in - gel with trypsin, and analyzed by peptide mass fingerprinting ( pmf ) with matrix assisted laser desorption / ionization - mass spectrometry ( maldi - ms ). erp60, trypsinogen, proelastase, lipaseandso on were identified. this will enable us to present an overview of the proteins expressed in rat pancreas tissues and lays the basis for subsequent comparative proteome analysis studies with pancreas development

    從中隨機選擇一些差異蛋白質點，進行基質輔助激光解吸-電離飛行時間質譜（ maldi - tof - ms ）測定其膠內酶解后的肽質指紋圖譜，用mascot軟體查詢swiss - port數據庫，初步鑒定為一些與生長發育、物質代謝、細胞因子、信號轉導等有關的蛋白質，如erp60 、 trypsinogen 、 proelastase 、 lipase等。
  18. The number of modes should be selected according to the participant coefficient of mode when calculating the internal force by the response spectrum method ; ( 4 ) the roof plate of large base which connect the towers together should be thick enough but not exceeding the proper scope that the towers and the large base can vibrate together, ( 5 ) in structures with large base and muti - towers, with increasing of the capacity of the large base, the inter - story shear force will increase while the inter - story displacement will decrease as to fulfill the ductility request to avoid the large base becoming weak story, but meanwhile, the upper story will turn into weak story, thus the coefficient r s should be within 2. 0 ~ 3. 0

    採用振型分解反應譜法計算結構內力時應根據振型參與系數選擇振型避免漏選；大底盤多塔樓結構連接各塔樓的裙房屋面剛度應做得大些，以保證底部裙房與上部塔樓共同振動，但也不能過剛；大底盤多塔樓結構底盤承載力的加強將使底盤層剪力增大、層間變形減小，但易於滿足延性要求，在一定程度上可避免底盤成為薄弱層。但底部加強會導致薄弱層的上移，因此採取提高底盤承載力的措施的效果是有限度的，承載力系數s宜取為2 . 0 3 . 0之間。
  19. In this thesis, for the merits of high frequency spectrum utility factor and high - speed data communication, the ofdm is introduced into the underwater acoustic communication. combined with fec to combat the frequency - selective fades and isi in the underwater acoustic channel, high speed data transmission is realized by employing ofdm technology

    本研究嘗試將ofdm技術引入水聲通信領域，利用該技術頻譜利用率高，多載波并行傳送的特點，結合通道編碼，以克服水聲通道多徑干擾引起的頻率選擇性衰落和碼間干擾，獲得高速率數據傳輸。
  20. In this study a microbial system for biphenyl biodegradation is set up in order to investigate the effects of surfactants on biodegradation of hydrophobic organic compounds. four strains which can grow on biphenyl as the sole carbon and energy sources are selected out, in which alcaligenes eutrophus dj1 and pseudomonas sms02 are chosen as degradation strains. after studing the bioavailability of three nonionic surfactants ( op - 10, tween - 80, and triton x - 100 ), they are added into the biodegradation system of biphenyl

    為了考察表面活性劑對疏水性有機污染物生物降解的影響，本論文選擇聯苯作為模擬研究體系，篩選、馴化得到四株可利用聯苯作為碳源生長的菌株；考察了聯苯降解菌株對三種非離子表面活性劑op - 10 、 tween - 80 、 tritonx - 100的生物可利用性；用高效液相色譜法測定了非離子表面活性劑對聯苯的增溶曲線；較系統地研究了加入非離子表面活性劑對聯苯生物降解速率的影響。
分享友人
分享到 Line

分享到臉書