查询词典 surveying sextant

The guided work is the key to the ultra-Long jacked pipe project. But the manual surveying method can not satisfied the need of the ultra-long jacked pipe project.

中文摘要超长顶管施工的导向工作是顶管施工中的关键，如今在一般距离顶管施工中采用的人工测量方法完全不能满足超长顶管施工的要求。

Using the judgment matrix of detectable and locatable of gross errors in surveying error and reliability theory, it is proved firstly that the number of zero column vectors in LZD\'s judgment matrix equals to the rank defects of LZD\'s coefficient matrix. And then, LZD\'s matching equation having the detectability and locatability of gross errors is verified by a series of tests. These conclusions powerfully support the following researches on algorithms of detecting DEM deformations in theory.

运用误差与可靠性理论中的粗差可发现和可定位判断矩阵，证明了LZD算法判断矩阵中零列向量的个数等于LZD算法系数阵列秩亏数，试验验证了LZD算法匹配方程具备粗差发现和定位能力，为DEM差异探测算法提供了理论支持。

The theory and methods of generalized inverse of matrice are important basic tools in many mathematical desciplines,and have extensive applications in economics,statistics,surveying,optimization techniques,information processing,operations research and so on.

广义逆矩阵的理论和方法，不仅是许多数学分支的重要工具，而且在经济学、统计学、测量学、最优化、信息处理和运筹学等应用学科中都有着非常广泛的应用。

The sketch and specific design approaches of mid-block street crossing are generalized and three management and control modes are discussed. Based on extensive investigation and survey, the paper analysis the arriving laws in different land-use condition and the traffic characteristics of different crossing entities under different control modes. The initial characteristic, the speed and dispersion of the mobile flow are also intensive studied, as well as the effect of mid-block street crossing. Establish the linear planning models on the coordination between the signals of mid-block crossing and intersection. Finally the evaluation of the model output is carried out from time saving results, safety, economic results and social results. Set the example of Taiping north road in Nanjing, surveying the traffic situation, applying the method of signal coordination between the mid-block crossings and intersection to realize the south-to-north signal coordination design. The evaluation results show the coordination plan are more superior to the current signal plan.

本文首先阐述了行人过街物理设施的概略设计和详细设计方法，讨论了路段人行横道的三种交通管制方式的设计方法和实用条件；其次，在充分的实际调查基础上，详细分析了不同用地性质条件下的过街需求的到达特性和不同交通管制下不同过街实体的交通特性，分析了进入路段的机动车初始流特性，并对机动车在路段中的车速特征、离散性以及路段信号控制人行横道对机动车流的影响进行了研究；然后，根据以上分析的过街交通和机动车交通的交通特性，建立了路段行人过街信号与交叉口信号协调控制的线性规划模型；最后，对模型输出的协调控制方案进行了效益评价分析，从时间效益、安全性、经济效益和社会效益四个方面，定量和定性相结合地对其实施效果予以评价；以南京市太平北路路段为例，根据现状交通状况，应用行人过街信号与交叉口信号协调控制的方法，对该路段由南向北方向进行单向协调控制设计，并进行方案效益分析评价，提出了优于现状控制方案的人行过街信号与交叉口信号协调控制方案。

The paper has mainly introduced the fuses equipment and their function of the electric equipment 6502. Analysis and discussion on selecting the protective fuses for each grade in the three have been performed. The theoretical analysis and field surveying have concluded that the capacity of the fuses of the first grade should be selected by the capacity of the power screen, the mid-value method should be adopted in capacity selecting of the fuses in the 2nd grade and the 3rd grade fuses should be ensured by the maximum loads current.

详细介绍了6502电气集中设备熔断器的设备和作用，并对三级防护的各级防护熔断器的选择进行了逐级分析和探讨，理论分析和现场实测认为：第一级熔断器的容量按电源屏容量要求选择；第二级熔断器的容量选择采用中值法；第三级熔断器则根据最大负载电流来确定。

He could spend hours in surveying its creeping progress, in moralising over its mechanism.

他可以一连几个小时望着它爬行，并对此浮想联翩。

Testing subgrade surface deflection with Beckman Beam has been used extensively at highway engineering,but owing to the impaction of strickling diversification;pivot and dial indicator bracket position of Beckman Beam flexure instrument;as well as the unconformity of computation theory and practice,revising the deflection value gotten by surveying is needed.

用贝克曼梁法测试路基表面弯沉在公路工程中得到广泛应用，测试中由于受车型多样化、贝克曼梁弯沉仪支点和百分表支架位置以及计算理论与实际不符等影响，测得的弯沉值需要进行修正。

Stallings has provided a state-of-the-art text covering the basic issues and principles and surveying cryptographic and network security techniques.

适用于作为一学期的密码学、计算机安全及网络安全本科或研究生课程。

A few more on the poop; two others posted inthe shrouds, and armed with spyglasses, were attentively surveying theisland.

但是，有一点他们是可以肯定的：飞快号面前的这个无名海岛上是有人居住的，而且这里可能有许多移民随时准备保卫它。

The damaging situation of orange scale and its natural enemy and control countremeasures were studied by investigating 11 typic orange gardens in the whole prefecture,surveying the fixed sites and the control test in the orange garden of this prefecture.

为搞清黔西南州柑桔蚧虫及主要天敌的种类、发生危害情况，以制定相应的防治对策，1987～1995年对分布在全州有代表性的11个柑桔园进行了调查，并在黔西南州柑桔园基地进行定点观察和防治试验。

He studied their excrement for evidence of livestock hair.

他为家畜毛的证据研究他们的粪便。

Loneliness is not grounds for deportation, deportation of the people are not all lonely people.

寂寞也不是放逐的理由，放逐的人也并不都是孤独的人。