查询词典 effective cross section

The paper chooses the assembly of aircraft digital assembly location as a research object, chooses the assembly of aircraft section as a research example, aims to study the method of aircraft digital assembly location, focuses on the research of the structure of digital assemble control prototype system for aircraft section based on laser measurement, develops the servo control device and related software based on LM629, ATmega128 and LMD18200, completes the construction of the system based on the assembly of aircraft section.

以飞机的数字化装配定位为研究对象，以飞机舱段的装配为例，以探索飞机数字化装配的方法为目的，通过对基于激光测量的飞机舱段数字化装配定位控制原型系统结构的研究，采用运动控制芯片LM629、单片机ATmega128和功率放大芯片LMD18200构成了伺服系统控制随动装置，并开发了相关软件系统，完成了基于舱段大部件装配的数字化装配定位控制原型系统的设计开发。

First, we consider nonholonomic chained systems with modeling error, in this section,based on back-stepping , using the so-called adding a integrator , state-scaling technique , we design discontinuous feedback law,such that the trival solution of the closed-loop systems global strong stable; Second,we consider high-order nonholonomic chained systems with modeling errors and external disturbances, in this section,using input/state-scaling and integrator backstepping methods , we design discontinuous feedback law and give out the switching strategy, such that the closed-loop systems global /C-exponential stable; Finally, we consider a class of more general power chained form systems with particular drift-terms, in this section , using Lyapunov method, we design time-varying feedback law , such that the closed -loop systems p—exponential stable.

第一部分考虑的模型为带有模型误差的高阶非完整链系统，我们运用加幂积分器、State-scaling技巧以及基于Back-stepping方法构造出不连续反馈律，从而使得所讨论系统的闭环系统的平凡解全局强稳定；第二部分考虑的模型为带有模型误差的不确定高阶非完整链系统，这一部分我们运用input／state scaling和integrator backstepping方法构造出不连续反馈律，并给出切换策略，使得所对应的闭环系统全局κ-指数稳定；第三部分考虑的系统是形式更为一般的且带有特殊形式漂移项的幂链系统，利用Lyapunov函数方法，设计出时变反馈律，从而使得相应的闭环系统ρ-指数稳定。

The web perforation can provide space for electrical conduits and bracing. Therefore, it has the meanings and motive for the study of C-shaped section with web openings. The strength of a compression member can be influenced by the section shape, thickness of section, length of member, and support condition.

不过，构材之厚度、加劲与未加劲、是否开孔、上下两端之接合方式，皆会影响受压构材之抗压能力，所以目前先针对C形断面构材的开孔与否及上下两端之接合方式，分别以两种尺寸来讨论，并藉由有限元素分析软体ANSYS 6.0版，来模拟构件受压时，断面的应力分布情形。

Company has hammered at research and development of damping section of papermaking machine since its establishment , after over 20 year's market exploration and continuous improvement, prominent achievements have been got in design, processing and reform of head box, screen section and pressing section ,it is through the first provincial identification and batch production dehydration equipment manufacturers,?

公司从成立伊始就致力于纸机湿部的研制与开发，经过二十多年的市场探索和不断改进，在流浆箱、网部及压榨部的设计、加工与改造等方面取得了卓越的成绩，是首家通过省级鉴定和批量生产脱水器材的厂家，产品载入科学技术文献出版社的《中国技术成果大会》（1993第15期）。

Guarding is described further in Section 2.2.1 for voltmeters, Section 2.3.1 for ammeters, and Section 2.4.2 for ohmmeters.

有关电压表、安培计和欧姆计的保护技术将在第2.2.1、2.3.2和2.4.2节进一步介绍。

The high risk zone mainly contributes in the fore section of study area, which is 15% of the whole area. This zone is the key limit zone of human activity. The middling risk zone mainly concentrates on mid section, which is 25% of the total area. This zone will be exploited with relevant engineering and non-engineering steps to reduce hazard. The low risk zone contributes in the mid-back section, 60% of study area. It is the most-making zone.

高风险区主要集中在研究区前缘，约占总面积的15％，范围较稳定性差区有所扩大，是今后人类活动的重点限制区；中等风险区主要分布在中部的稳定性中等、人类社会经济活动相对集中区，约占总面积的25％，该区可通过采取相应的工程措施和非工程措施进行防灾减灾，加以开发利用；低风险区主要集中在中后部，约占总面积的60％，是可充分利用的地带。

Taking the Heidenhain control system for Mikron NC machine tool as example, I-DEAS postposition processing includes INIT program section, START program section, and TERMINATE program section.

作者单位：（许昌烟草机械有限责任公司，河南许昌 461000）摘要：以Mikron数控机床的Heidenhain控制系统为例，I-DEAS后置处理由INIT、START、TERMINATE三个程序段组成。

Special general partner enterprises to apply the provisions of this section; in this section are not provided, the application of this chapter, the provisions of Section I to V.

t+jy-I0G0特殊的普通合伙企业适用本节规定；本节未作规定的，适用本章第一节至第五节的规定。

And we know that when the last three sections are of the form(-1,0,1),(1,0,-1),the length of the third section increase when the length of the firstsection decrease,and prove that when the third section,that is section of v=0,is oflength 0 at the beginning,the analysis is also suitable.

并证明当右边3段是(-1，0，1)；(1，0，-1)形式时，在第1段时间长度减少的情况下第3段长度是增加的，而且证明了v＝0即第3段开始不存在即值为0时，也可以从无到有的发展。

Each major section also includes many sub-sections, for instance, the animal section contains animal husbandry sub-section, poultry industry, pig breeding industry, world of dogs, and world of horses.

杨凌农业主题公园分为植物区、苗木花卉区、动物区、昆虫世界、生命园区、购物商城、表演区等7个功能大区，每一个大区又分若干个小区，例如动物区可分为畜牧区、家禽业、养猪业、狗的世界和马的世界。

This paper designs the communication system of radio telescope FAST.

针对500m口径球面射电望远镜FAST分布式控制系统的特点完成了其通信系统的设计。

Political sheep's step-by-step a large number of fossils unearthed in the county soil Ma Ali after rural village in the middle of sallow pelitic siltstone.

步氏和政羊化石大量出土于广河县阿力麻土乡后山村，产于灰黄色泥质粉砂岩中。