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  不确定
     Robust Control for Uncertain Systems and Its Applications to Ship Motion Control
     不确定系统的鲁棒控制及其在船舶运动控制中的应用
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     A STUDY ON ROBUST CONTROL FOR LINEAR UNCERTAIN TIME-DELAY SYSTEMS
     线性不确定时滞系统的鲁棒控制研究
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     Robust Control of Linear Uncertain Systems
     线性不确定系统鲁棒控制研究
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     Research on Robust Stability, Adaptive Dead-Time Compensator and H_∞ Robust Control for Uncertain Processes with Large Dead-Time
     大时滞不确定过程稳定性及自适应时滞补偿H_∞鲁棒控制研究
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     Neural Network Adaptive Reconfigurable Control for Uncertain Nonlinear Systems
     不确定非线性系统的神经网络自适应重构控制
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  不确定性
     Study on Uncertain Reasoning Theory and Knowledge Discovery
     关于不确定性推理理论与知识发现的研究
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     Study on the Uncertain Problems of River Water Environmental System
     河流水环境系统不确定性问题研究
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     Study on Reasoning with Uncertain Evidences and Expert System for Therapy of Cow Diseases
     证据不确定性推理和奶牛疾病治疗专家系统的研究
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     Random Method for Vibration Control Systems with Uncertain Parameters
     不确定性振动控制系统的随机方法
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     The Study of Uncertain Robot Force/Position Intelligent Control and Trajectory Tracking Experiment
     不确定性机器人力/位置智能控制及轨迹跟踪实验的研究
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  不确定的
     Robust H_∞ control for fuzzy descriptor systems with uncertain parameters
     参数不确定的广义T-S模糊系统的鲁棒H_∞控制
短句来源
     H_∞ tracking control for coupled spatio-temporal chaos with uncertain model based on fuzzy observers
     基于观测器的模型不确定的耦合时空混沌H_∞跟踪控制
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     A Supply Chain Dynamic Model with Time-delay and Uncertain Parameters and Its Robust H_∞ Control
     时滞和参数不确定的供应链动态模型及其鲁棒H_∞控制
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     Optimal Guaranteed Cost Control for T-S Fuzzy Descriptor Systems with Uncertain Parameters
     参数不确定的广义T-S模糊系统的最优保成本控制
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     ②In the stress source relating to diseases, occurrence of “pain or discomfort”was 100%,and the stress evaluation value of “uncertain operation result”was(3.12±0.88).
     ②在与疾病有关的压力源中,“疼痛或不舒适”发生频率为100%,“不确定的术后结果”压力评估均值为(3.12±0.88)。
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  不可靠的
     Secondly, Under the uncertain supply source environment, Established 3 unstable supply sources modules towards radon demands, i.e Lead-time unstable module; Quality unstable module and both lead-time plus quality unstable moduleBy using the combination method of theatrical analysis and practice analysis, Established the basic assumption for the practical problems.
     其次,针对供应源不确定环境下,建立了面向随机需求的三种不可靠供应源的模型,即提前期不可靠、质量不可靠和两者同时存在不可靠的模型,采用理论分析和实证分析相结合的研究方法,对现实中的问题进行基本假设,运用期望分析法构造出数学模型结合微分学进行求解,对求解进行完整分析和仿真,并加以总结。
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     Under the uncertain environment, if the performance index of the structure can not merely reach the designing requirement, and change the insensitivity to the fluctuations of various uncertain quantities, this kind of structure is sane, reliable;
     传统优化方法固然可以使结构材料使用等达到最省,但是它对波动变化十分敏感,用传统优化方法进行设计的结构是敏感的,在不确定因素影响下,结构是不可靠的
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      uncertain
    We present a new scheme for uncertain reasoning based on Bayes' formula in likelihood ratio form in this paper.
          
    When it is used to combine several pieces of uncertain information, the scheme deserves the following merits: (1) It is consistent with human intuition; (2) No exact point-valued probability is required.
          
    The purpose of this paper is to discuss how the value of high-tech firm can be rationally valued by taking into account managerial flexibility when its future revenue is uncertain, thereby the firm's manager can make rational investment decisions.
          
    Robust controller for a class of uncertain switched fuzzy systems
          
    A robustness control of uncertain switched fuzzy systems is presented.
          
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    The observation of Koshtoyantz that urea has beneficial effect on muscle fatigued by indirect stimulation, has been confirmed. This"defatigue" effect really only represents a removal of conduction block at the neuromuscular junction. On fatigue of the muscle fibres itself urea has no ameliorating effect. To obtain the above mentioned"defatigue" effect of urea requires rather strict experimental conditions; in particular, the Ringer used to soak the muscle and to prepare the urea solution must contain a small...

    The observation of Koshtoyantz that urea has beneficial effect on muscle fatigued by indirect stimulation, has been confirmed. This"defatigue" effect really only represents a removal of conduction block at the neuromuscular junction. On fatigue of the muscle fibres itself urea has no ameliorating effect. To obtain the above mentioned"defatigue" effect of urea requires rather strict experimental conditions; in particular, the Ringer used to soak the muscle and to prepare the urea solution must contain a small amount of phosphate and bicarbonate and a relatively low concentration of calcium. Cysteine not only has no similar"defatigue" effect, but when present together with urea even tends to suppress the"defatigue" effect of the latter. Another contrast between urea and cysteine is that while cysteine can remove the neuromuscular block due to cadmium chloride, urea can not. Neuromuscular block resulting from lack of sodium ions or a certain ionic inbalance in the medium can also be partially removed by urea. Soaking in urea solution causes the muscle to respond repetitively to single stimulus, whether indirect or direct. The hypothesis that the"defatigue" effect of urea on the muscle results from the release of the SH groups of some proteins, has been examined and found to be at present very uncertain. The authors are indebted to Prof. T. P. Feng for guidance and encouragement throughout this work.

    對於肌肉在接連的間接刺激中所發展的疲乏,脲有解除作用,半胱氨酸沒有。這實際上只是對神經肌肉接頭的傳導阻遏的解除,對於肌纖維本身的疲乏,脲並不能減輕。要得到脲對於神經肌肉接頭的疲乏的解除作用,試驗須具備一定的條件,特别是用以浸潤肌肉和配製脲溶液的任氏溶液,必須含有少量的重碳酸根或磷酸根離子並有適宜的鈣離子濃度。脲的處理能使肌肉纖維對單個刺激作重複反應,不論刺激是間接的或直接的。 對於由於電解質缺乏或不平衡而起的神經肌肉接頭的傳導阻遏,脲亦有解除作用。但氯化鎘引起的傳導阻遏,脲不能解除,而半胱氨酸則能。 關於脲作用的機制,本文有所討論,指出釋放硫氫基的假說能否成立,尚属疑問。

    1. The different methods of transmission of caprine pleutopneumonia have been investigated with the seed materials derived from the sporadic cases from Sinkiang, Shansi and Shantung Provinces. The results were briefly summaried as follows: (1) By subcutaneous inoculation, only local swelling and elevation of body temperature were found in a small number of goats, no pneumonic changes were seen from autopsy. (2) By intramuscular inoculation, the tested goats showed massive edema and necrosis at the site of inoculation...

    1. The different methods of transmission of caprine pleutopneumonia have been investigated with the seed materials derived from the sporadic cases from Sinkiang, Shansi and Shantung Provinces. The results were briefly summaried as follows: (1) By subcutaneous inoculation, only local swelling and elevation of body temperature were found in a small number of goats, no pneumonic changes were seen from autopsy. (2) By intramuscular inoculation, the tested goats showed massive edema and necrosis at the site of inoculation and the surrounding area of the muscles, and nopulmonary lessions have been seen from autopsy. (3) By intravenous injection, one of the two goats was infected and hepatizafion of the lungs was observed. (4) By direct contact, the latent period is usually over 20 days. Both adult and kids might be infected. (5) By intrathoracic inoculation, the morbidity is approximately 72%. The latent period is uncertain. (6) By inhalation of atomized material through nostrils, the goat usually showed symptom 5—18 days later. (7) By intratracheal injection, the morbidity is about 95%, and the incubation period is 3—7 days. When the goats were injected in a standing position, the hepatized areas were usually seen on the right lung; when injected first in a recumbent position and then in standing position, the hepatized areas were usually seen on both sides of the lungs. 2. The virulent lung tissue of goat infected with caprine pleuropneumonia is non-patho-genic to sheep, rabbit and guinea pigs. 3. The infected lung tissue retained its virulence for 20 days in room temperature (16℃) and for 24 days in cold stroage (2℃) in 50% glycerin saline. 4. The frozen-dried lung tissue kept at 2—8℃ retained its virulence for 49 months. 5. The M. I. D. of fresh lung tissue for goat through intratracheal injection is about 0.000004 gin., while the frozen-dried lung tissue is about 0.004 gm. in equivalent for fresh lung tissue.

    1.曾以山傳肺組織乳劑液或胸水,作對山羊之各種途徑感染試驗,其結果如下: (1)皮下注射法:僅使少數羊呈現體温及局部腫脹反應,但不引起山傳特具的肺臟病理變化。 (2)肌肉注射法:可引起局部及隣近的筋肉腫脹發炎,呈濕性壞死,重者陷於死亡,但肺臟無變化。 (3)靜脈注射法:可發生疾病並引起肺臟肝變。 (4)人工接觸法:在接觸20多天後,大多數羊均可發病,雖小羔亦難倖免。 (5)胸內注射法:發病率為了27%,潛伏期長短很不一致,肺的病變多限於局部。 (6)噴霧戚染法:有一部分羊經過噴霧感染後5—18天發病,並引起肺臟肝變。 (7)氣管注射法:發病率高達95%以上,潛伏期大多數為3—7天,用站立姿勢注射法,病變多在右肺葉,如採用站立仰臥姿勢兼用注射法,則病變遍於左右兩葉。 2.山傅的強毒肺組織液,不能使緬羊、家免及海猪等試驗動物致病。 3.新鮮肺組織在50%甘油鹽水中,置室温(16℃)20天,冰箱(2℃)124天,仍有致病力,如再延長時間,則失去致病力。但病原組織凍乾後,置普通冰箱保存49個月又13天,仍有致病力;2年以後,其發病毒價約減低10倍。新鮮病原組織小至0.000004克仍可致病。凍乾後毒力約減低1000倍...

    1.曾以山傳肺組織乳劑液或胸水,作對山羊之各種途徑感染試驗,其結果如下: (1)皮下注射法:僅使少數羊呈現體温及局部腫脹反應,但不引起山傳特具的肺臟病理變化。 (2)肌肉注射法:可引起局部及隣近的筋肉腫脹發炎,呈濕性壞死,重者陷於死亡,但肺臟無變化。 (3)靜脈注射法:可發生疾病並引起肺臟肝變。 (4)人工接觸法:在接觸20多天後,大多數羊均可發病,雖小羔亦難倖免。 (5)胸內注射法:發病率為了27%,潛伏期長短很不一致,肺的病變多限於局部。 (6)噴霧戚染法:有一部分羊經過噴霧感染後5—18天發病,並引起肺臟肝變。 (7)氣管注射法:發病率高達95%以上,潛伏期大多數為3—7天,用站立姿勢注射法,病變多在右肺葉,如採用站立仰臥姿勢兼用注射法,則病變遍於左右兩葉。 2.山傅的強毒肺組織液,不能使緬羊、家免及海猪等試驗動物致病。 3.新鮮肺組織在50%甘油鹽水中,置室温(16℃)20天,冰箱(2℃)124天,仍有致病力,如再延長時間,則失去致病力。但病原組織凍乾後,置普通冰箱保存49個月又13天,仍有致病力;2年以後,其發病毒價約減低10倍。新鮮病原組織小至0.000004克仍可致病。凍乾後毒力約減低1000倍,其最小發病量一般為0.004克。

    Some of the viewpoints held by Prof. Chwang Chien-ting in his paper "The Fusion Point of Ash of Chinese Coals" (this journal, 1957, 2, No. 2, 114) are quite worthy to notice and discuss. 1. The assumption made by Prof. Chwang concerning the composition of coal ash cannot be warranted. In fact, the various ingredients of coal ash originate from very complicated mineral matters. Thus the assumption that coal ash is simply composed of the various metallic oxides mechanically mixed is unjustifiable. Prof. Chwang...

    Some of the viewpoints held by Prof. Chwang Chien-ting in his paper "The Fusion Point of Ash of Chinese Coals" (this journal, 1957, 2, No. 2, 114) are quite worthy to notice and discuss. 1. The assumption made by Prof. Chwang concerning the composition of coal ash cannot be warranted. In fact, the various ingredients of coal ash originate from very complicated mineral matters. Thus the assumption that coal ash is simply composed of the various metallic oxides mechanically mixed is unjustifiable. Prof. Chwang further postulated that when SiO_2/Al_2O_3=1.17 (i.e. the relative amounts of SiO_2 and Al_2O_3 in ash conform to the composition of kaolin Al_2O_3·2SiO_2·2H_2O and no free SiO_2 is present), the increase of percentage of metallic oxides in ash will not reduce the fusion point of the ash as there is no free SiO_2 to combine with the metallic oxides to form low-melting silicates. However, this postulation is inconsistent with the statement of the original paper and. also disproved by the experimental results. 2. For the same SiO_2/Al_2O_3 ratio, the increase of content of metallic oxides b(=Fe_2O_3+CaO=MgO=K_2O=Na_2O) in ash usually reduces the fusion point of the ash. But our experimental results show that when b exceeds 35%,the fusion points are higher than those for b equal to 30%. 3. For the same SiO_2/Al_2O_3 ratio, the fusion point of the ash increases with R(=SiO_2/Al_2O_3/Fe_2O_3+CaO+MgO+K_2O+Na_2O);when R is of approximately the same value, the smaller the SiO_2/Al_2O_3 ratio, the higher will be the fusion point. When R approaches or is smaller than 1, the fusion point shows no definite regularity, irrespective of the variation of SiO_2/Al_2O_3 ratio. 4. In the whole range of the coalification series, the content of volatile matter can represent neither the composition of the coals themselves, nor that of the ashes, hence it bears no relation with the fusion point of the ash. From the experimental results, no clear correlation can be found between the sulfur content and the iron content in ash, so that the fusion point is not closely related with the sulfur content of the ash. The influence of SiO_2 on the fusion point of coal ash is still uncertain and disputable, pending further investigation and verification.

    莊前鼎教授所著“中國煤的灰熔點”一文中的部分論點是值得商榷的。 (1) 根據莊先生提出的理論,即假定煤灰的主要成分係由瓷土+自由SiO_2+各種金屬氧化物所組成,因而當煤灰中的SiO_2/Al_20_3=1.17時(即SiO_2與Al_2O_3都被認為是來自瓷土——2SiO_2·Al_2O_2·2H_2O,而無自由SiO_2存在時),雖金屬氧化物增加,但沒有自由SiO_2和金屬氧化物結合而降低灰熔點。然而實際上煤灰成分是來自煤中極其複雜的無機礦物質,將煤灰簡單地假定為瓷土、自由SiO_2及金屬氧化物的機械混合物是不恰當的。這一論點不僅與原文內容有不符之處,而且實驗結果也證明它不能成立。 (2) 一般在煤灰中的SiO_2/Al_2O_3相同時,金屬氧化物b%(Fe_2O_3+CaO+MgO+K_2O+Na_O)的增加,能降低煤灰熔點。但是根據試驗結果,富b%達35%以上時,灰熔點反較b為30%時高。 (3) 當SiO_2/Al_2O_3相同時,R=(SiO_2+Al_2O_3)/(Fe_2O_3+CaO+MgO+K_2O+Na_2O)愈大,灰熔點愈高。如R近似時,SiO_2/Al_2O_3愈小,灰熔點愈高。當R...

    莊前鼎教授所著“中國煤的灰熔點”一文中的部分論點是值得商榷的。 (1) 根據莊先生提出的理論,即假定煤灰的主要成分係由瓷土+自由SiO_2+各種金屬氧化物所組成,因而當煤灰中的SiO_2/Al_20_3=1.17時(即SiO_2與Al_2O_3都被認為是來自瓷土——2SiO_2·Al_2O_2·2H_2O,而無自由SiO_2存在時),雖金屬氧化物增加,但沒有自由SiO_2和金屬氧化物結合而降低灰熔點。然而實際上煤灰成分是來自煤中極其複雜的無機礦物質,將煤灰簡單地假定為瓷土、自由SiO_2及金屬氧化物的機械混合物是不恰當的。這一論點不僅與原文內容有不符之處,而且實驗結果也證明它不能成立。 (2) 一般在煤灰中的SiO_2/Al_2O_3相同時,金屬氧化物b%(Fe_2O_3+CaO+MgO+K_2O+Na_O)的增加,能降低煤灰熔點。但是根據試驗結果,富b%達35%以上時,灰熔點反較b為30%時高。 (3) 當SiO_2/Al_2O_3相同時,R=(SiO_2+Al_2O_3)/(Fe_2O_3+CaO+MgO+K_2O+Na_2O)愈大,灰熔點愈高。如R近似時,SiO_2/Al_2O_3愈小,灰熔點愈高。當R接近1或小於1時,則不論SiO_2/Al_2O_3變化如何,與灰熔點之間無任何規律的關係。 (4) 從無煙煤到長焰煤,揮發分V~Γ既不能完全代表煤成分,更不能作為煤灰成分,因之與灰熔點無任何關係。根據實驗結果,煤中的全硫量較高時,煤灰中Fe_2O_3含量並不一定高,故與灰熔點並無明顯的關係。SiO_2含量對煤灰熔點的作用尚難確定,有待於進一步的研究。

     
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