optical density method 中文意思是什麼
optical density method
解釋
光密度法-
A new method for measuring the vibration of shadow mask without touch by detecting the light density with reflection type optical fiber sensor is presented. the measurement system based on the new method is designed to make the vibration measurement easier working, faster calculating, and get more precise results. it is an important measurement and analysis tool to improve the performance of shadow mask and display quality of cpt
本文提出了基於單光纖光強度反射法的非接觸式微振動測量系統的原理，並設計製造了該測試系統，探索出了簡單方便可靠的測量方法，能夠準確客觀地反映蔭罩振動的各項參數（各振動模的振動頻率、振幅、衰減時間） ，實現了測試裝置的簡便化和測試過程的自動化，為cpt張緊式蔭罩系統的性能改進與顯示質量的提高提供了有效的測試分析手段。 -
In this thesis, a strain of associative nitrogen fixing bacteria with high nitrogenase activity was selected and the further studies for it were conducted, the results obtained are as follows : selection and identification of associative nitrogen fixing bacteria with high nitrogenase activity. the nitrogenase activities detected by means of the acetylene reduction method and growth rates tested by optical density of germ suspension under the x 400nm ( od4oo ) of all the strains tested except for the strain w12 reduced gradually due to frequent subculture during a year. however, the strain w12 has been showing high and stable nitrogenase activity and growth rate since it was isolated five years ago
固氮菌株的篩選與鑒定：測定從不同來源分離、收集和保藏的12個固氮菌株或分離物在不同保存時期的固氮酶活性和生長能力，發現多數菌株在初分離得到時固氮酶活性較高，但隨著轉接次數的增多卻逐漸喪失固氮酶活性，生長也隨之減弱，只有w12在五年前從埃及分離得到至今一直保持旺盛生長勢和較高的固氮酶活性， 48h內乙烯生成量可達1800nmol乙烯ml菌液以上，遠遠高於其它菌株，其生長量（ od _ （ 400 ）值）也遠遠高於其它菌株。 -
The variation of the film composition can be monitored by using the method of spectrum analysis during the film deposition ( for the intensity of the persistent line is proportional to the particle density of the element in the vacuum chamber ). the measurement of the transmission spectrum of the film on a transparent substrate can be used to calculate the film parameters, such as refractive index, extinction coefficient and the thickness of the film. therefore, the combination of the two methods would be helpful to on line monitoring the film constituents and the optical paramenters in the preparation of thin films
在制備薄膜的過程中，利用光譜分析的方法，以放電光譜特徵譜線強度的變化來反映相應物質成分的變化，以連續光譜光源發出的光透射過薄膜的透射率的變化，來反映薄膜的厚度、折射率、吸收系數等光學參數的變化，從而達到在制膜過程中，對薄膜的成分、厚度等參數進行在線監控的目的 -
An optical density method for determination of microalgal biomass
光密度法測定微藻生物量 -
With the finite - difference method, self - consistent solutions for the possion ' s equation, injected current density, carrier concentration, optical field and thermal conduction equations have been realized to study the thermal - field properties, the coupling of electricity, thermal and optical - fields, and the influences of n - dbr and double oxide - confining regions on the characteristics of vcsels
本文建立了一個直接耦合的準三維理論模型，通過有限差分法求解泊松方程、載流子擴散方程、熱傳導方程和光場方程的自洽解，研究了vcsel的熱場分佈特性，並實現了電、熱和光場的耦合，同時考慮了n - dbr及雙氧化限制層對vcsel特性的影響。 -
In reference 1, based on optical principle, and using microscope " s f ocu sing method, a method of measuring the thickness and refractive index of transpa rent material is presented ; besides, according to the quantitative correspondenc e relationship between the refractive index and the density of some solution, a method of measuring the density of solution is presented too
文獻1是根據光學原理，運用顯微鏡調焦方法提出了測量透明材料厚度和折射率的方法；在此基礎上，根據不少溶液的折射率和濃度均有定量對應關系的特點，提出測定濃度的簡易方法。 -
Plastics - smoke generation - determination of optical density by a dynamic flow method
塑料.煙霧的產生.用動態流動方法對光密度進行測定 -
Test method for specific optical density of smoke generated by solid materials
通過固體材料對煙霧產生的特定視覺密度的試驗方法 -
Standard test method for specific optical density of smoke generated by solid materials
由固體材料產生的煙霧的特定光密度標準試驗方法 -
Method for measurement, in the laboratory, of the specific optical density of smoke generated by materials
材料生成煙霧的光學比密度的實驗室測量方法
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