Among the four paper formation assessment methods, i.e., coefficient of variation, varience (S^2), M/K formation index, and modified all-pairs score, the COV and look-through judgements are most affected by mean light absorbance. Under similar mean light absorbance renditions, all four methods gave similar results.

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A spectral-correction-integral- photometry method and its application in the measurement of the luminous flux of blue LEDs are introduced.

介紹了一種光譜校正積分光度法及其在藍光LED光通量測量中的應(yīng)用，對測量中的各種不確定因素作了理論分析网站黄se，并與單純的分光光度法和積分光度法的不確定度作了比較人妻精品视频一区二区三区，證明該方法可實現(xiàn)極高的測量精度。

The invention discloses a method for measuring seawater chemical oxygen demand by photometry, wherein the seawater exemplar is first pre-processed, then using the basic potassium hypermanganate as reaction system, the potassium permanganate is deacidized quantitatively by organics to produce manganate, using pure water or margin solution as reference ratio, measuring the absorbance an of the manganate at its maximum absorbing wave length 430 nm, drafting the A-COD value operating curve, obtaining the concentration of the organics in the water, i.e.

本發(fā)明公開了一種對海水化學(xué)需氧量進行測定的光度測定法国产在线无码制服丝袜无码知名国产，該方法首先將海水樣品進行預(yù)處理欧美熟妇肉体销魂孕妇，再以堿性高錳酸鉀為反應(yīng)體系，這樣海水中的有機物在強堿性介質(zhì)中與過量的高錳酸鉀迅速反應(yīng)360毛片视频AA，高錳酸鉀被有機物定量還原后生成錳酸鹽三级黄色片超碰免费在线观看，以純水或空白溶液作參比，在錳酸鹽的最大吸收波長430nm處測其吸光度A男女猛烈无遮挡羞羞视频，該吸光度A與海水樣品中的有機物的含量具有正相關(guān)關(guān)系色呦呦av电影。

By synthetically analysizing the physical and chemical properties of all components and particle size, the content of F2641 in the JOB-iC is determined by gravimetric analysis after F2641 is seperated from HMX,TATB and PNP through ? alkali reflux. Determination conditions is set as follows the sample is boilingly refluxed for six hour in a constant temperature bath after adding lOOm! 8.0 ?? 0.1% NaOH. The solvent DMF saturated by TATB is used for extracting HMX,F21 and PNP from the sample and TATB is seperated by crucible filter G4. The mass precent of TATB is determined by extraction fractionation. The mass percent of PNP is measured by multiwavlength linear regression ultraviolet spectrophotometry. The testing conditions are set as follows:multiwavlength constitution: X=267nxn, 275nm, 283nm, 29mm, 299nm,the application scope of the Lambert-Beer law: the concentration of PNP is O.005?0.O25mgIml, the concentration of HMX is 0.060.3Omg/ml,absorption coefficents of PNP and HMX are solved by the slope of linear regression curve of absorbency- concentration of standard solution of PNP and HMIX for measuring wavelengthes,on the basis of the Lanibert-Beer law and absorbancy additivity principle, the slope of linear regression curve of A/E(1) and E1 of PNP and HMX solution is regarded as the concentration of PNP in the solution.

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Half the amount of cylinder power is added algebraically to the sphere power , and this yields the resulting spherical equivalent power.

即用球面鏡光度與一半柱鏡光度的代數(shù)和可乐无码Aⅴ在线视频，計算結(jié)果就是等效球面的光度。

A novel method for determination of benzoyl peroxide with spectrophotometry was developed. Inclusion ratio of β cyclodextrin to dibenzoy peroxide and benzoic acid is obtained with spectrophotometry.The mechanism of the inclusion was studied,too. The results showed that β-CD react with dibenzoyl peroxide to form a 1:1 or 2:1 host-guest complex, with the apparent formation constants of 5.0× 10~2and 2.5× 10~4 , respectively.β-CD reacts with benzoic acid to form a 1:1 host-guest complex with the apparent formation constant of 6.9 × 10~2 after the dibenzoyl peroxide was reduced by hydroxyl ammonium chloride.

建立了用β環(huán)糊精測定過氧化苯甲酰的分光光度法国产视频不卡在线，并測定了β環(huán)糊精與過氧化苯甲酰和苯甲酸的包結(jié)比亚洲性爱中文字幕视频，隨著β-CD濃度的增大，可與BPO分別形成1：1或2：1的包容絡(luò)合物一区二区三区精品视频免费播放，包結(jié)常數(shù)分別為5.0×10~2和2.5×10~4午夜在线视频，與苯甲酸形成1：1的包容絡(luò)合物操日色，包結(jié)常數(shù)為6.9×10~2久热综合；由于包結(jié)物的吸光度值比過氧化苯甲酰的吸光度值大大增加，建立了一種當(dāng)β-CD存在下yeyefuli无码视频，在水溶液中測定過氧化苯甲酰的方法欧美一级片在线免费观看网站。

spectrophotometric method with phenol disulfonic acid ; ultraviolet spectrophotometer ; nitrate nitrogen ; comparison

本文通過對常用的酚二磺酸光度法和紫外分光光度法進行實驗比對1314午夜精品理论片，同時調(diào)查云南省內(nèi)兩種分析方法考核的情況，從而找出兩種方法的優(yōu)缺點黄网你懂的，供分析人員在實踐中借鑒国产真实激情在线观看电影视频。l原理1.1酚二磺酸光度法測定的原理方法依據(jù)：GB7480一87《水質(zhì)硝酸鹽氮的測定酚二磺酸分光光度法》。用濃硫酸與苯酚作用生成酚二磺酸

Scan to adjust the brightness and contrast, overexposed picture because the brightness is too high, it looks pale; inadequate picture exposure due to the brightness is too low, it looks nigrescent.

掃描時給調(diào)動光度和不差比度国产精品盗摄一区，曝光功分的圖片由于光度太矮国产综合久久精品综合AV无码，看上去發(fā)白；曝光不敷的圖片由于光度太矮欧美呦系列com，看上去發(fā)暗91亚色视。

Moreover, supersensitization as well as its mechanism by stabilizers is studied in spectral-sensitized AgCl emulsion Results indicate that the adding order of stabilizer and sensitizing dye has great influence on the sensitivity of emulsion and only stabilizer added after sensitizing dye can supersensitization be obtained Apart from supersensitization and fog-inhibition by stabilizers, it is also significant to spread the amount of addition of dye, which can lead the further improvement of sensitivity of emulsion.

本文還研究了穩(wěn)定劑在氯化銀乳劑中的超增感作用并應(yīng)用多種手段研究了其超增感作用機理。結(jié)果說明天天干天天舔天天插，穩(wěn)定劑與增感染料的添加次序?qū)θ閯└?strong>光度有非常重要的影響欧美综合亚洲日韩精品区换脸，只有在增感染料之后加才可能產(chǎn)生增感作用。在一定的穩(wěn)定劑添加范圍內(nèi)www.asmr5.com，它不僅可以提高氯化銀乳劑的感光度欧美XXXX欧美、降低灰霧，而且還能加大增感染料的用量欧美欧美一区，進一步提高乳劑的感光度污黄色片99精品人人操人人插。這對乳劑的光譜增感來說具有重要意義。

We have derived their synodic periods and estimated the shape and orientation of rotational axis for one asteroid. In this thesis, several aspects were involved:(1) Why do we study the asteroids?(2) Based on two classical photometric models of the asteroids, the luminosity variation of the asteroids were introduced.

為了了解小行星的光度這個物理量国产一级午夜福利，在第二章中介紹了兩種經(jīng)典的小行星光度模型九九精品热全在这，討論了小行星光度隨相位角的變化及沖效應(yīng)對光度的影響，分析說明了引起小行星光度變化的若干因素国产好黄好硬好爽免费视频一。

candid metre：光米?光度?位

Candela ?光米?光度?位? ^G8WC3 | candid metre ?光米?光度?位? QyNt | candid metre second ?光米秒?光度?位? \\#"X5*

candid metre：燭光米光度單位

Candela 燭光米光度單位 | candid metre 燭光米光度單位 | candid metre second 燭光米秒光度單位

luminosity function：發(fā)光度函數(shù),光度函數(shù)

luminosity factor 發(fā)光度因子,發(fā)光率 | luminosity function 發(fā)光度函數(shù),光度函數(shù) | luminosity mass 光度質(zhì)量

photometric paradox：光度佯謬

photometric method 光度測定法 | photometric paradox 光度佯謬 | photometric parallax 光度視差

photometric paradox：光度矛盾

photometric aperture 光度孔徑 qU | photometric paradox 光度矛盾 94Ly$Jo & | luminosity curve 光度曲線 '" oU:B

Hefner phot：黑夫納輻透{早期德國光度標(biāo)準(zhǔn)}

黑夫納燈{早期德國光度標(biāo)準(zhǔn)} Hefner lamp | 黑夫納輻透{早期德國光度標(biāo)準(zhǔn)} Hefner phot | 黑夫納流明{早期德國光度標(biāo)準(zhǔn)} Hefnerlumen

PHOTOMETRIC：光度學(xué)燈光

1,標(biāo)準(zhǔn)燈光(standard)2,光度學(xué)燈光(photometric)A,你用的是光度學(xué)燈光(photometric)來照亮場景的話B,你用的是標(biāo)準(zhǔn)燈光(standard)來照亮場景的話注意:考慮到光能傳遞只有用光度學(xué)燈光(photometric)效果最好,所以如果準(zhǔn)備使用光能傳遞的話,

photometric standard：光度標(biāo)準(zhǔn),光度標(biāo)準(zhǔn)器,測光用標(biāo)準(zhǔn)光源

photometric quantity 光度值 | photometric standard 光度標(biāo)準(zhǔn),光度標(biāo)準(zhǔn)器,測光用標(biāo)準(zhǔn)光源 | photometric unit 光度單位

luminosity curve：相對可見度曲線,光度曲線,發(fā)光度函數(shù)

luminosity coefficient ==> 光度系數(shù),相對可見度,可見度系數(shù) | luminosity curve ==> 相對可見度曲線,光度曲線,發(fā)光度函數(shù) | luminosity distance ==> 光度距離

absorbance ratio：吸光度比值 吸光度比值

absorbance 吸光度 吸光度 | absorbance ratio 吸光度比值 吸光度比值 | absorbance ratio method, pH indicator pH指示劑吸光度比值測定法 pH指示劑吸光度比值測定法