查询词典 zero set

Based on an appropriate monitoring function, a switching scheme is proposed so that after a finite number of switching, the tracking error can converge exponentially to zero if the plant relative degree is one, or a residual set whose radius is proportional to some design parameters if the plant relative degree is greater than one.

在监控函数的监测下，相关的控制信号经至多有限次切换后将停止切换，系统跟踪误差指数收敛于零(若被控系统相对阶为1)，或收敛于一个正比于设计参数的残集中(若被控系统相对阶大于1)。

One of the major contributions of Maxwellian theory was that it set up an essential relation between the electromagnetic field and light in vacuum, and defined the speed of electromagnetic wave as the constant speed of light c , which implies a hypothesis that the rest mass of the photon should be zero exactly.

麦克斯韦电磁理论的一个重要贡献在于它将真空中的电磁场与光联系起来，并将电磁场的传播速度定义为真空的属性，即恒定的光速 c ，因而建立了电磁波与光之间的本质联系。

Based on accurate step motor system parameters, the state equations describing step motor dynamic characteristics are set up. The operation of the self synchronization closed loop control system is simulated on computer. In the research the principle analysis and system design have been done about self synchronization closed loop operation. The relation between rotating EMF and the rotor position of the step motor is discussed. Through detecting the zero value of rotating EMF the rotor position of the step motor is indirectly obtained.

在得到准确的步进电动机系统参数的基础上，建立了描述步进电动机动态特性的状态方程，并对自同步闭环系统的动态特性进行了计算机仿真在论文的研究中，分析了旋转电势与电机位置的对应关系，通过旋转电势的过零检测间接得到转子位置信号，利用这种"间接传感器"方法实现了步进电动机的自同步闭环控制，论文从原理分析和系统设计两方面进行了研究。

The company measures self-containedly, possess a set of intact quality cer- tification systems, make every effort to lower the chance that the defective work is dispatched from the factory to zero.

公司检测设备齐全，具备一套完整的质量保证体系，力求将不合格品出厂的机会降为零。

In order to locate the human structure in 3-dimensional space precisely and to compare the data set among different individuals conveniently, we suggested and created a universal coordinate system of the human body in which the pubic symphysis horizontal plane was determined as the universal standard original zero plane.

为了确定人体结构在三维空间中的准确定位以及在不同个体之间便于比较，文中提出和建立了可视化人体的整体坐标系统。

"The UPC is printed by the manufacturer on each grocery item — a set of thin and thick vertical stripes accompanied by a series of numbers under the stripes and a zero, centered to the left of them."

条形码由厂家印在每一食品上——这是一组粗细不同、垂直排列的线条，线条下方有一组数字，左边有一个"0"字。

After basis set superposition error and zero-point vibration energy correction, it is found that the most stable dimer and trimer have strong hydrogen bonding interaction with –48.52 and –72.15 kJ/mol.

经基组重叠误差和零点振动能校正后，最稳定的二聚体和三聚体的相互作用能分别为-48.52和-72.15 kJ/mol。

This transformation is recommended when zero values are common in the original data set (Underwood, 1981), as in the present study.

这一转变是零值时，建议是常见的原始数据集（安德伍德， 1981年），作为在本研究中

Products include: mobile phone sets, folders, folder manager, small leather goods, wallets, purse,×°ü, business card packages, business manuals, industrial and commercial logs, notebooks, CD sets, passport folders, zero wallet, leather gift set ,á, certificate, signature thin, menu, wine card, song thin¤promotional materials, gifts, brand men's accessory products package, advertising gift bag, Cosmetic Bag.

產品范圍包括：手机套、文件夹、经理夹、小皮件、银包、票夹、钥匙包、名片包、商务手册、工商日志、笔记本、CD套、护照夹、零钱包、皮具礼品套装、名片册、证书、签名薄、菜单、酒牌、点歌薄、皮具宣传品、礼品、品牌配套产品男士包、广告礼品袋、化妆包。

Term structure of interest rate, which is also called the yield curve, plots a set of yield to maturity of the zero-coupon bonds with different maturities.

利率期限结构，又称为收益率曲线，是指在某个时点上不同期限的零息债券到期收益率所组成的一条曲线。

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。