spectral 中文意思是什麼

The hertzsprung - russell diagram serves this purpose. it is a plot of absolute magnitude against surface temperature i. e., spectral type of stars

簡單來說，赫羅圖把大量恆星的絕對星等和表面溫度或譜型關系以圖表方式顯示出來。

Standard solar constant and zero air mass solar spectral irradiance tables

標準太陽能常數和氣團起始陽光能光譜輻照表

This effect is particularly important for leds since the emitted spectral width is several hundred angstroms.

這種效應對于發光二極體來說是特別重要的，因為發光二極體所發射的光譜帶寬可達幾百埃。

Apply minimum cross - entropy spectral estimation to verify simulation models for antitank missile systems

最小交互熵譜估計在反坦克導彈系統模擬模型驗證中的應用

The remote sensing quantitative retrieval model for the appraisable factors of desertification monitoring are founded. in naiman country, inner mongolia, the experimental area, the hyperspectral imaging spectrometer data in plant growth seasons are collected by state - produced airborne hyperspectral imaging spectrometer omis - i, and the etm + image is also obtained. meanwhile, ground investigation and measurement are made, which include the measurement on reflection feature of different kinds of geo - targets and the ground investigation data necessary for spectral rebuilding and retrieval models of the appraisable factors of desertification monitoring

本研究以內蒙古奈曼旗作為研究試驗區，採用我國自行研製的機載高光譜成像光譜儀omis - ，在植被生長季節取得高光譜解析度成像光譜儀數據和etm ~ +圖像，並進行了同步的地面調查及量測，包括不同類型地物反射特性量測和光譜重建以及荒漠化監測評價因子定量反演模型所必需的地面樣方調查數據。

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。

In the regions of astrodome physics, solid physics, photochemistry and medicine, measurement and calibration of spectral irradiance of ultraviolet and vacuum ultra - violet have become more and more important research means and instrument

紫外和真空紫外光譜輻照度的測量和定標，在天體物理、固體物理、光化學及醫藥學等領域中已成為越來越重要的研究手段和工具。

Study on the spectral change of cate quantum dots synthesized in aqueous solution labeling avidin by uv and fluorescence spectrophotometries

量子點標記親和素前後光譜變化的研究

Synthesis and spectral properties of azo - pyrogallol reagents

偶氮連苯三酚試劑的合成及其光譜特性

On the spectral radius of bicyclic graphs of order n

階雙圈圖的鄰接譜半徑

Here he inaugurated the spectral theory of bilinear symmetric forms.

在這里他開創了雙線性對稱形式的光譜理論。

The spectral distribution of a black body radiation is described by planck's.

黑體輻射的光譜分配由普朗克定律描述。

Spectral analysis of breath sounds in asthmatics and chronic asthmatic bronchitis during acute episode

支氣管哮喘和慢性喘息型支氣管炎患者發作期呼吸音的分析研究

Studies on interaction of calix 8 arene and protein by spectral methods

芳烴與蛋白質的相互作用

" for his discovery of the doppler effect in canal rays and the splitting of spectral lines in electric fields

發現極隧射線的多普勒效應以及電場作用下光譜線的分裂現象

Four donor - acceptor conjugated carbazole derivatives for two - photon absorption optics were designed and synthesized. the spectral characteristics and the structure - activity relationship were investigated

摘要設計、合成了四個新的?唑類具有較大雙光子吸收截面的化合物，研究它們的光譜特性，對雙光子吸收的構效關系進行初步探索。

Colour filters are not very effective in isolating narrow spectral bands.

一些濾色片不能很有效地分離狹窄的光譜帶。

Colour filter glass test methods spectral characteristic

濾光玻璃測試方法光譜特性

Conclusion this result shows that that the pinna and concha have almost no effect no sound localization in horizontal plane, which means spectral characteristic does not possihly dominate in horizorntal plane

結論實驗表明耳廓和外耳道對水平方向的聲音定位幾乎無影響，也就是說在水平方向上的聲音定位，耳廓和外耳道的濾波、共振等改變聲波頻譜特性作用可能不明顯。

On the basis of remote sensing technique ' s good characteristic with large - area, multi - time, multi - photograph variety, manifold abundant spectral information and high ground resolution, the fault tectonics frame, river geomorphy ( such as terrace, floodplain, shoal, etc ) and suspended load, etc. were explained after analyzed the fault tectonics, river geomorphy, characteristic in the tm image by gray bar statistics, primary component analyses, tm741 image integration, line convolve enhancement and model recognition etc. especially 9 piece of fault tectonics were explained in this thesis, in succession, the impacts of the factors severally were analyzed

遙感技術具有大范圍、多時相、多片種、多層次、含有豐富的光譜信息及具有較高的地面解析度的特點。本文利用該技術，運用灰階統計特徵分析和主成分分析、 tm741多波段融合、線性卷積增強、模型提取等一系列遙感解譯分析方法，分析了斷裂構造、河流地貌（階地、漫灘、沙洲）及懸浮物等在tm遙感圖象上的影像特徵，解譯出了安徽南部斷裂構造格架、河流地貌和懸浮物的分佈，並新解譯出了9條近東西向的斷裂。