指定壽命 的英文怎麼說
中文拼音 [zhǐdìngshòumìng]
指定壽命
英文
specified life-
It is easy to show, for an exponential decay, that the uncertainty in the life time is also z.
很容易證明，對于指數衰減來說，壽命的不確定性也是z。Although these methods can meet the end in some extent, they are restrictly applied owing to the inconsideration of the constitution in machine or deficiency of universal fitness
傳統的剩餘壽命預測方法在一定程度上能夠滿足要求，但是它們或者對設備的組成特點考慮不足，或者缺乏普遍的指導意義，因而應用具有一定的局限性。By starting with the analysis of generator end structure and overheat sources, it is presented that the technical key required to expand the capacity of the unit is to solve the electromagnetic leakage shielding problem. by proceeding with the analysis of the reasons causing the aging of the stator winding bars insulation, the necessity for stator winding bars to adopt class f insulation and relative fixing technological improvement are pointed out so as to extend the service life of the winding bars insulation
從分析發電機端部結構及過熱原因入手，提出了增容的技術要點在於解決端部漏磁屏蔽問題；從發電機線棒絕緣老化原因分析入手，指出為延長定子線棒絕緣使用壽命，線棒主絕緣採用f級的必要性以及相關工藝的改進。The projectile amounts in the cleaning and cooling cycle of lifetime tests of all kinds of firearms were fixed on the base of the vast and systematic research for actual combats and the statistic analysis of combat examples
經大量而系統的實戰研究、戰例統計分析，確定既可滿足試驗要求也可指導實戰的各種槍械壽命試驗中的擦拭與冷卻周期射彈量。Finger clip - spo2 sensor for adults ; available weight upon 30kg ; provided plug : lemo 5pin, ; gilded point inside the connectors ; for cables : white color, innoxious tpu, high double - shielded cable, od4. 0mm, length 3. 2 m ; new special alloy conductor increases the cable using life for 3 5 times ; finger pads : medical silica - gel, no irritability
插頭: lemo5pin單定向成人指夾式， 3 . 2m . tpu雙屏蔽線材保證信號傳送更清楚。特殊合金導體增加線纜壽命3 5倍。護墊:醫用硅膠無過敏性品質承諾:非人為損壞保修一年Then, probability prediction model of durable life is founded. through discussing the probability characteristics of influencing factors, the law of durable reliability is analyzed, and the prediction method is validated by the experimental data
建立了基於規定可靠指標的混凝土耐久壽命的隨機預測模型，通過探討影響因素的概率分佈，分析了耐久可靠性的發展規律，運用工程實際檢測數據對本文提出的耐久壽命方法進行了驗證。Based on the current research achievements on durability under chloride environment, probability theory, structural reliability theory, concrete structures theory, neural network theory and structure dynamic theory are employed comprehensively in this dissertation. some problems of durability of reinforced concrete structures under chloride environment were studied through the exploitation of experimental data, the rule of chloride ingress and steel bar corrosion, the performance of corroded member, and residual life prediction. the main issues and results in this dissertation are as follows : 1 、 the probability method for the prediction of durable life based on the stipulated reliability index for concrete structures under chloride environment is presented in this dissertation
本論文在國內外對氯離子侵蝕環境下混凝土結構耐久性研究成果的基礎上，綜合運用概率理論、結構可靠性理論、混凝土結構理論、神經網路理論、結構動力學理論等基本理論和方法，結合實際檢測數據，按照氯離子侵蝕、鋼筋銹蝕、銹蝕構件性能、銹蝕構件壽命預測的思路對氯離子侵蝕環境下鋼筋混凝土結構耐久壽命預測的有關問題進行了深入系統地研究，完成以下主要研究工作並取得相應成果: 1 、提出了氯離子侵蝕下基於規定可靠指標的混凝土結構耐久壽命的概率計算方法。The count of failure includes that of failure classification and failure pattern ; reliability indicator includes mean time to first failure ( mttff ) and mean time between failure ( mtbf ) ; life indicator includes feature life, center life, and specified life
其中，故障統計包括故障類別的統計和故障模式的統計；可靠性指標包括平均首次故障里程mttff和平均故障間隔里程mtbf ；壽命指標包括特徵壽命、中位壽命、額定壽命等。Considering the past research results, frost resistance of concrete using portland cement, and the designed service life of 100 years of testing bridge, the control indexes of high durability concrete are defined in this paper. mixture proportion of concrete used in pier column, coping, precast box beam and plate of bridge is designed based on the compact pile theory, and construction technique is studied also
結合課題組以往的研究成果，根據試驗橋設計使用壽命100年的要求，確定出高耐久性混凝土的設計控制指標，基於最緊密堆積原理和最佳漿骨比原理對橋梁的墩柱、蓋梁、預制箱梁和橋面板用高耐久性混凝土的配合比進行設計，並對其施工應用技術進行了研究。Sixthly, the monte - carlo method is used for calculating the failure probability of durable failure under different service time, and drawing a plot of relationship between failure probability and service time. according to the plot, the service life based a acceptable failure probability can be found easily
第六，用monte - carlo方法對不同使用年限耐久性失效概率進行計算，得到使用年限和失效概率的關系曲線，並由關系曲線得出氯離子侵蝕環境下鋼筋混凝土構件在指定可接受失效概率水平下的耐久壽命。This paper studied two - dimension model of rotor and cylinder and builded the finite element model. generally take the rotor and the cylinder as control objects ， definite their boundary conditions ， solute their temperature fields ， and then analyst their bear expansions and distortions as well as thermal stress distribute ， to control the courses ， and keep the unit the most optimum operating condition. and put the theories into practice developed by c + + program, used as the important part of the online monitoring and management system of life of the steam turbine
本文對汽輪機轉子和汽缸的二維模型的進行分析，建立有限元模型；將汽輪機轉子和汽缸作為控制對象，確定其邊界條件，求解其溫度場，分析其熱膨脹、熱變形以及熱應力分佈；採用c + +語言編制汽輪機高壓缸、中壓缸以及缸體的溫度場實時在線監測程序，作為汽輪機壽命在線監測與管理系統的核心部分，用以指導汽輪機的啟停及運行過程，使機組可以安全的、經濟的運行。During the course of the life estimation, if the experimental parameters can be carefully chosen, aircraft structure life estimation has a positive effect on the structure fatigue des ign
在壽命估算過程中，只要比較精確地選取各方法所需的經驗參數，飛機結構所估算的最終結果對飛機結構抗疲勞設計和型號定壽有很大的指導意義。Although reducer can avoid step sense and oscillation partly, the strap transmission will influence orientation precision ( it is key norm to the small metallographic sample cutting machine ), so plan to use step motor to drive the screw directly, the step motor at low velocity, which is not drived by the subdividing drive system, will have obvious oscillation and noise that would influence the cutting function, the usage life and sample structure
由於步進電機是通過皮帶輪減速來驅動絲杠，進而帶動砂輪片前進和後退，雖然減速能部分消除步進感和振動，但皮帶傳動會影響定位精度，定位精度對精密切割機十分關鍵的技術指標。採用步進電機直接驅動絲杠，未經細分驅動的步進電機在低速運行時，有明顯的步進感、振動和噪聲，從而對切割的性能、砂輪片的使用壽命、試樣的組織結構產生較大的影響。The endurance function of the insulation field is widely concerned in the power system. according to the equality between the two dimensional weibull distribution and the law of electrical aging, after the method for estimation of the voltage endurance coefficient is presented by the maximum likelihood estimation and the minimum square estimation of the two dimensional weibull distribution parameters, on the basis of the analysis of the test disadvantages under invariable voltage, the method of obtaining the voltage endurance coefficient under the intension increased by degrees is considered
電氣絕緣電老化性能是電力系統普遍關注的問題，由於二元weibull分佈與電老化定律在評價絕緣老化特性上存在等價性，本文首先介紹了二元weibull分佈參數採用極大似然法和最小二乘法估計獲得電壓壽命指數的方法，同時在分析其在恆定電壓下試驗容易出現，由於電壓選擇不當導致試驗時間過長現象的基礎上，討論了利用場強遞增方式確定電壓壽命指數的方法。In this paper, select li 3 # and grease 7014 as basis grease. select nano diamond and sio _ 2 are selected as additives, design 14 recipe using k and l10 as appraise norm study the dose of nano particle to the effect of contact fatigue of ceramic and steel friction has the conclusion that proper quantities nano particle which put in two grease can improve the contact fatigue life of ceramic using sem and edax, nano particles fatigue resistance mechanism are analyzed. which can improve the contact fatigue life of ceramic and steel friction
本文選用3 #通用鋰基脂和7014號寬溫航空潤滑脂作為基礎脂，選取納米金剛石粉和納米二氧化硅微粒作為添加劑，設計了14種配方。利用威布爾斜率k和額定壽命l10作為評價指標，研究了納米微粒的用量對陶瓷球/鋼副的接觸疲勞壽命的影響，得出在所選兩種基礎脂中添加合適用量的納米微粒添加劑可以提高陶瓷球的接觸疲勞壽命。利用sem和edax ，初步揭示了納米微粒提高陶瓷/鋼副滾動接觸疲勞的機理。Generally speaking, you should only assign long - lived objectssuch as shared members or global variablesto
一般來說，僅應將共享成員或全局變量等長壽命的對象指定為Considering kept the effect of all the evaluation factors, multiplication - addition type s fuzzy operator is adopted in the analysis for the life of entirety oil - vessel used in plane, and ahp method is applied to get the evaluation indexes weights
在對飛機整體油箱的壽命分析中，考慮到保留所有評判因素的影響，採用了乘、加型模糊運算元，並用層次分析（ ahp ）法來確定評價指標權重。Secondly, been generalized the failure data of electrical connectors from working and testing environment, electric contact failure, insulation failure, mechanical connection failure and other failure are four mainly failure modes of connectors, moreover, built the faulty - tree to analyze their reliability level. however, contact fault failure was the most prevalent mode of electrical connectors. under natural working and reserving conditions, the contact stress decreasing, fretting and surface film growing are mainly reasons to make electrical connector failure
其次，通過對現場、試驗場電連接器的失效情況進行統計和分析，總結出電連接器的四種主要失效模式：電接觸失效、絕緣失效、機械連接失效和其他失效，並對電連接器進行了故障樹分析，指出電接觸失效是電連接器失效的主要形式，而在正常的工作條件下，造成電接觸失效，即決定電連接器工作壽命的主要原因是氧化膜層的生長、接觸對磨損以及磨損腐蝕物的堆積，而影響氧化膜層的生長、接觸對磨損以及磨損腐蝕物堆積的主要因素是環境振動和溫度應力，為電連接器進行失效機理分析奠定了基礎。Abstract : analyzed the demands of capacitor specific parameters in modernpst, emphatically discussed specific parameters demands of filter capacitor and absorber capacitor. pointed to take care of voltage rating and conditions of life test in use
摘要：分析現代電源技術的發展對電容器特殊參數的要求，著重討論濾波電容器、吸收電容器，指出在使用時應注意額定電壓與壽命試驗的條件。Geometric, kinetic, and lifetime analysis of anti - rotation mechanism with thrust ball - bearing is conducted, which is commonly employed in the scroll compressor of automotive air - conditioning system, and its wear during later stage ' s operation is also analysed quantitatively. it is pointed out that, in the case of having radial flexible mechanism, the wear between anti - rotation mechanism and scroll wrap exhibits synchronism and self - compensation. otherwise slight rotation would take place with that mechanism and orbiting scroll, resulting in asymmetric pressure within compression chamber pair and radial leakage
針對汽車空調渦旋壓縮機中最常見的防自轉機構滾珠防自轉止推軸承，進行了幾何、受力及壽命分析，並對其後期磨損加以定性的理論分析.指出在具有徑向柔性機構的情況下，該防自轉機構和渦旋盤齒的磨損具有同步性和自動補償性.在無徑向柔性機構的情況下，防自轉機構和渦旋盤會產生微自轉，可導致壓縮腔對壓力不對稱和產生徑向泄漏分享友人