查询词典 unknown

IN 1976 Pierre Boulez, then already a cutting-edge musician in France, named an unknown 19-year-old to be the resident pianist in his elite Parisian troupe, the Ensemble InterContemporain.

1976年，当时的法国领军音乐家皮埃尔。布列兹把一位默默无闻的19岁男孩命名为"现代乐集"--布列兹的精英巴黎剧团--的常驻钢琴师。

On conditions that the dead zone model parameters and the bound of the uncertain nonlinear term are all unknown, the proposed adaptive controller can eliminate the effect of actuator dead zone faults well and ensure bounded-errors tracking.

在死区模型所有参数以及系统非线性不确定项上界均未知的情况下，所设计的自适应控制器可以很好地消除执行器死区故障的影响，保证跟踪误差有界。

The proposed method has the merit that the numerical characteristics of stochastic temperature field response can be obtained by analyzing the random temperature field just in one time.3. Perturbed numerical algorithm of nonprobabilistic convex set theoretical models on the temperature fieldThe uncertain parameters of physical parameters and initial boundary conditions of heat conduction are described by the convex model. The perturbation formulas of the upper and lower bounds of temperature field response with unknown-but-bounded parameters are given via the combination of matrix perturbation theory and the convex set theory model.4. Numerical analysis for transient temperature field with interval parametersConsidering the uncertainties of the transient heat transfer, the physical parameters and initial boundary conditions are regarded as interval variables.

该方法具有只进行一次随机温度场分析便可以获得其响应的数字特征的优点。3、温度场的非概率凸集合理论模型的摄动数值解法将结构导热的物理参数、温度场的初始和边界条件等不确定性参数以凸模型加以描述，基于矩阵摄动理论和处理不确定问题的凸集合理论模型的结合，导出有界不确定参数瞬态温度场响应所在集合的上、下界摄动计算公式。4、具有区间参数的瞬态温度场数值分析考虑结构瞬态热传导问题的不确定性，将结构各物理参数和温度的初、边值条件均视为区间变量。

Then by matching the traction along the branches and the boundary of the strip, Cauchy singular equations were obtained, in which the point dislocation and the distributed dislocation density served as the unknown function.

根据板条边界和裂纹面上的应力边界条件，建立以集中位错强度和分布位错密度为未知函数的Cauchy型奇异积分方程，利用半开型积分法则将该奇异积分方程化为代数方程求解。

The class of nonlinear systems considered is referred to as a semi-strict feedback system and includes parametric uncertainties, input gain uncertainties and the unknown but bounded nonlinear function and disturbance.

论文所研究的非线性系统是一类广泛的半严格反馈系统，系统的不确定性包括有界的参数不确定性，有界的输入增益的不确定性以及未知但有界的非线性方程和外部干扰。

The interconnections were assumed to satisfy the match condition and be bounded by a linear function of delayed states with unknown gains.

研究了一类含变时滞互联项并同时具有匹配和不匹配不确定性的大系统的分散自适应控制问题。

In this strategy, the unknown nonlinear functions are approximated by the fuzzy tree model to obtain the prototype controller; the linear parameters in the fuzzy tree model are adjusted online to improve the performance of the controller in realizing the tracking control to a bounded set point input.

该方法用模糊树模型逼近非线性系统中的未知非线性函数，得到初始的控制器，然后在线调节模糊树模型中的线性参数，改善控制器的性能，实现对有界参考输入信号的跟踪控制。

This indicates that it is impossible to design a Clarke-Gawthroptype self-tuning controller or an adaptive pole placement controller for unknown nonminimumphase plants to track arbitrary bounded set point sequences asymptotically.

这表明对未知离散非最小相位系统，不可能设计Clarke－Gawthrop型自校正控制器或自适应极点配置控制器去渐近跟踪任意有界设定序列。

But i'm not satisefied, i want to change my life, i love the boundlessness, i'm interested in all unknown things.

但我不满足现状，我要该变我的人生。

Petiole (0.5-)2-17 cm; bract apex acute to acuminate unknown in C.

叶柄(0.5-)2-17厘米；苞片先端锐尖或渐尖未知在 C。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷