This paper deriving the theory work inflection point in the static stage characteristics curve of small measurement range linear dimension measurement. by the way of high pressure and back pressure pneumatic measure and designed the parameter of the mainly and measure spray head, which are the key component in the spray head - baffle pneumatic sensor. the different groups for the main - spray head and the measure spray head, will effect the dynamic and static stage characteristic parameter. the author have done contrast experiment and optimization design to test and verify the theory derivation whereby made the rang of show valve of pneumatic measure system measure range up to 40 u m, the sensitivity up to 100mv / u m, resolution up to 0. 05 p m, the uncertainly of measure is less than 0. o2 u m, satisfaction of requirement of groups the carboy hatch thickness size precise measure of soft shims
對高壓背壓式氣動測量用於小量程線性尺寸測量的靜態特性曲線的理論工作拐點進行了推導,對氣動測量系統中的噴嘴-擋板型氣動傳感器中的關鍵部件? ?主噴嘴和測量噴嘴的參數進行了理論設計,對主噴嘴和測量噴嘴的不同組合,將影響測量系統靜、動態特性指標的噴嘴參數進行了對比實驗和優化設計,並
通過實驗驗證了理論推導,從而使氣動測量系統量程的示值范圍達到40 m ,靈
敏度達到100mv m ,解析度達到0 . 05 m ,測量不確定度小於0 . 2 m ,滿足了壓縮機缸蓋軟體墊片厚度尺寸精密測量分組的要求。
During the middle period of the 20th century, geoffrey barraclough accomplished his critical reflection on euro - centricity through thorough investigation and study of european middle ages history, and the perfect understanding on the changes and trends of the world
摘要20世紀中葉,
通過對世界形勢和歐洲形勢變化的
敏銳把握和深刻理解,在自身對歐洲中世紀史的深入研究和借鑒其他學者研究成果的基礎上,巴勒克拉夫比較系統地闡明了自己對歐洲歷史的看法和認識。
Study leader professor angela clow, from the university of westminster, said : " measurement of cortisol in saliva is an effective way of quantifying a person ' s stress levels
此項研究的負責人,英國威斯
敏斯特大學的安吉拉克洛教授對此表示: 「
通過唾液中的皮質醇濃度可以有效地判斷一個人的壓力水平。
The city workers were also given an audio - visual tour of london ' s only roman amphitheatre. study leader professor angela clow, from the university of westminster, said : " measurement of cortisol in saliva is an effective way of quantifying a person ' s stress levels
此項研究的負責人,英國威斯
敏斯特大學的安吉拉克洛教授對此表示: 「
通過測量唾液中的皮質醇濃度可以有效地判斷一個人的壓力水平。
In this thesis, the oxygen sensitive materials and glucose sensitive materials had been developed by thermo - polymerization method including carrier covalence method and carrier covalence - cross linking method, and the properties had been investigated using the detection experiment of oxygen and spectrophotometer, at the mean time, the applications of oxygen sensitive materials in fiber optical gaseous oxygen sensor and fiber optical dis solved oxygen sensor, and that of biology sensitive materials in fiber optical dextrose sensor had been studied in this paper. major content of this work includes five aspects as follows : ( 1 ). oxygen sensitive materials had been prepared by carrier covalence method, and the preparation mechanism of the materials had been investigated by fi - ir, sem, and the detection experiment of oxygen
本論文主要包括以下五個方面的內容: ( 1 )載體共價法制備氧
敏感材料:
通過紅外光譜、掃描電鏡圖譜和氧測試實驗探討該氧
敏感材料的制備機理,
通過氧測試實驗評價該氧
敏感材料的氧
敏感性和穩定性,同時研究了各種因素對該氧
敏感材料性能的影響( 2 )載體共價?交聯法制備氧
敏感材料:
通過紅外光譜、掃描電鏡圖譜和氧測試實驗探討該氧
敏感材料的制備機理,
通過氧測試實驗和分光光度計評價該氧
敏感材料的氧
敏感性和穩定性,同時研究了各種因素對該氧
敏感材料性能的影響( 3 )氧
敏感材料在光纖氣態氧傳感器中的應用:該傳感器的響應時間為10s ,檢測下限為5ppm ,檢測精度為0 . 5 ,具有較好的重復性和穩定性,遲滯較小,使用壽命至少為1年,適合各種環境下氣態氧濃度的檢測。
Relations between the signal - to - noise, sensibility, demagnetizing factor, output of fluxgate sensor with its diameter, thickness and turns of core are discussed in this paper. the author of this paper also concluded some basic principle for the designing of fluxgate sensor. the author designed and produced two dimension sensors to prove the possibility of the miniaturization of fluxgate sensor
本文還分析了小型化傳感器的實現可行性,分析了磁
通門傳感器的信噪比、靈
敏度、退磁系數、感應輸出與傳感器磁芯直徑、厚度和磁芯匝數的關系,論證了傳感器小型化的可行性,總結了在設計磁
通門傳感器時所應遵循的基本原則,並且設計製作了兩種尺寸的傳感器,從實驗角度論證了傳感器小型化的可行性。
Dermal hypersensitivity usually does not develop until three to four weeks after onset.
皮膚過
敏通常在起病後三、四周內不會出現。
But my focus was specially laid on the decision - making of investment under uncertainty and with competition, i first. extend the basic model of dixit & pindyck ' s by allowing the relevant parameter to be a random variable, then proposed an numerical example to show how to solve this model, i gave the algorithm and did the comparative static analysis, finally i developed a model of duopoly under uncertainty, considering the competition between the firms explicitly, using roa, i calculated the two firm ' s values respectively when they take different roles - to be leader or follower, and then checked the possible equilibriums
本文的重點是考察在同時存在不確定性和競爭的情況下,如何用實物期權的理論估算投資項目的價值,為此,文中發展了兩個模型,第一個模型是對dixit & pindyck的模型的擴展,它
通過一個相關的隨機變量來考察競爭對項目價值的影響,但沒有考慮企業間的相互博弈,文中給出了一個例子詳細地說明了該模型的求解並做了
敏感性分析;第二個模型是一個不確定情況下的雙寡頭模型,文中給出了用實物期權方法計算的兩企業在處于領導者和跟隨者兩種不同境況時的價值,並將企業間的相互博弈考慮在內,考察了可能的均衡狀態。
In the stage of the sun and the moon in sight, azimuth of the sun, the earth and the moon in the spacecraft body coordinate system is simulated. combining the simulated azimuth with the ephemeris of the sun and the moon, the state equation and observation equation are modeled. the initial orbital parameters calculated by least square method are used in orbit state equation to predict spacecraft state and to realize autonomous navigation
在日月可見階段,模擬日、地、月
敏感器測量信息,即日、地、月在航天器本體坐標系下的方位信息,結合日月星歷,建立狀態方程及觀測方程,
通過最小二乘法得到歷元時刻的軌道狀態初始值,將其代入軌道狀態方程進行自主導航。
During the calibration, a regress - analyse method is used to get the weight of the different channel based on equational coefficient, the weight represents the sensitivity of each channel
為了提高測量的可靠性和精確性,對9
通道數據同時採集,在測試標定時採用回歸分析方法,根據靈
敏度得到不同
通道的權值。
Good expression skills, extravert, quick reaction with service recognition, good communication skill and team spirit. more than 1 year experience in mortgage business
要求:口齒清晰,待人熱情,反應
敏捷,跟蹤服務意識強。具有溝
通親和力和良好的團隊協作精神,房屋貸款操作經驗一年以上。
After study on the technology of probe head of the optical fiber, a biosensor for determination of cholesterol which based on fluorescence quenching and adopted phase shift & phase lock technique to detect the change of light intensity was developed, in this biosensor, the cellulose acetate cod enzyme membrane was took as sensitivity basic dollar, ru ( phen ) 32 + was took as indicator of oxygen and furcated optical fiber as conduct carrier of light signal
通過對光纖探頭組裝技術的研究,以醋酸纖維素cod酶膜為敏感基元,釕( ) -鄰菲咯啉為氧指示劑,分叉光纖為光信號傳導載體,採用相移法和鎖相放大技術設計了一種基於熒光猝滅原理的測定膽固醇用的生物傳感裝置。