查询词典 weak point

On the basis of the conclusion above, the nonlinear weak controllable vectors can be obtained, which compose the second class of weak controllable matrix, by means of matrix transfermations of the first class of weak controllable matrix. Furthmore the second criterion of weak controllability, accessibility and strong accessibility, which is more standard, more succinct and more practical, is obtained. On the basis of the first criterion and the second criterion, several important problems about nonlinear controllability are discussed, which include 1 local controllability; 2 three classes of local controllable decomposition, separately by means of local coordinate changes in the neighborhood of a nonsingular point, a point on a singular surface or a designated point x〓 with a designated input u〓; 3 the character of controllability of the ith state variable x〓 in different controllable areas and their boundaries.

在第一判别定理和第二判别定理的基础上，我们分析了非线性系统受控性质中的几个重要问题，所得到的结论包括i得到了非线性系统在可平衡点附近的能控性判别定理；ii分别给出了非线性系统在非奇异点、s阶奇面以及在状态空间内给定的一点x〓和输入u〓上的三种状态分解形式以及相应的求解方法；利用系统的Ⅰ型弱能控矩阵与Ⅱ型弱能控矩阵秩相等的条件，得到了只用系统的前n个弱能控向量来判断系统的弱能控性的判别定理；iii通过引入系统状态分量的三类受控区域边界的定义及相应的求解方法，初步探讨了非线性系统各个状态分量在不同的受控区域及其边界上的受控性质。

In the last couple of seasons the goalkeeping position has been regarded as something of a weak point for Milan.

过去两个赛季中，门将位置一直被视为米兰的弱点。

Reinforced concrete and prestressed concrete have been developed in order to remediate to this weak point.

钢筋混凝土和预应力混凝土正是用来弥补该点不足的。

Second, the weak point that the pencil handle and material-saving pencil exist can be perfected and explain.

二、铅笔柄与节材铅笔存在的不足之处是可以完善和解释的。

Chapter 6:This chapter summarized weak point of the system, and describe the future development of Web Services.

第六章，总结了系统的不足之处，并给出了展望。

In allusion to weak point of traditional PID control can't effectively tracking parametric variation of control system ,utilize neural network have predominance that self-study、self-organization、associative memory、concurrent processing and can get satisfactory result in complex control system on the basis of double closed loop,advance apply adaptive linear element network—Adaline network, which has self-learn and self-adjust ability.

在双闭环控制的基础上，针对经典PID调节器不能有效跟踪控制系统参数变化过程这一弱点，利用神经网络具有自学习、自组织、联想记忆和并行处理等功能和对于复杂系统控制可以达到满意效果的优势，提出了采用具有自学习和自适应能力的单神经元网络——Adaline网络，来构成一种神经网络自校正控制器。

All it takes is for that wallop to act upon a weak point, crushing it, which then allows a tectonic plate to move....

它所要做的全部就是让这一冲击力作用于一个薄弱点，挤垮它，然后使得一个构造板块移动。。。。。。

Allit takes is for that wallop to act upon a weak point, crushing it,which then allows a tectonic plate to move....

它所要做的全部就是让这一冲击力作用于一个薄弱点，挤垮它，然后使得一个构造板块移动。。。。。。

Appellations of origin is an important intellectual property, but the legislation and theoretical research of this issue is a weak point in China.

原产地名称权是一项重要知识产权，我国有关立法和理论研究却是一个薄弱环节。

Chapter three prove Hague provision that the law of adopting concerning foreign affairs is covered by " Convention on Protection of Children an Co-operation in respect of Intercountry Adoption ", have put forward the weak point that the convention exists.

第三章说明了海牙《跨国收养方面保护儿童及合作公约》中关于涉外收养法律适用的规定，并提出了公约存在的不足之处。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。