Working Earth

The problems during establishing mathematical model of the working chamber earth pressure system are solved .

解决了建立密封舱土压力系统数学模型所涉及的关键问题。

The control equations of the working chamber earth pressure system under two kinds of control mode such as the separate control of screw conveyor speed , the combination control of advancing speed and screw conveyor speed are given respectively .

建立了单独控制螺旋输送机转速与同时控制推进速度和螺旋输送机转速这两种控制模式下，EPB盾构密封舱土压力系统控制方程。

The mathematical description between pressure and flow for screw conveyor of EPB shield under complex plastic extrusion process is absent , which leads to difficulty for the dynamic balance control of working chamber earth pressure of EPB shield .

由于缺乏对EPB盾构螺旋输送机在复杂塑性挤出过程中压力与流动之间准确的数学描述，给密封舱土压力动态平衡控制带来困难。

The model provides the basis for the numerical simulation for the work process of the working chamber earth pressure system . ( 2 ) The pressure dependent viscosity model and density model of viscoplastic non-newtonian fluid is established by user-defined method in CFD simulation environment .

提出了CFD仿真环境下非牛顿流体压力相关的粘度模型及密度模型的自定义方法，实现了对EPB盾构密封舱土压力系统工作过程中改性土体粘-弹-塑性流动行为的数值模拟。

It provides the basis for further researching on the dynamic balance control of the working chamber earth pressure system . ( 4 ) A new dynamic balance control method based on the on-line identification of model parameters and the optimization control for the working chamber earth pressure is proposed .

为密封舱土压力系统数学模型的建立奠定基础。（4）提出了一种基于模型参数在线辨识结合最优控制的密封舱土压力动态平衡控制方法。

There is important strategic meaning and important application value for improving control level of complex boring equipment to master the dynamic balance control technologies of working chamber earth pressure of EPB shield . It is also the inevitable trend for the development of the future shield technologies .

掌握具有地质适应性的EPB盾构密封舱土压力动态平衡控制技术，对提高我国复杂掘进装备控制水平，具有重要的工程实用价值和战略意义，也是未来盾构技术发展的必然趋势。

During the tunneling of EPB shield , it is realized that the dynamic balance control of working chamber earth pressure of EPB shield according to construction requirements and variations of geological condition , which can effectively control the land deformation and reduce the probability of accident .

EPB盾构在进行隧道施工时，实现密封舱内土压力根据施工要求及地质条件的变化自动进行动态平衡控制，可有效降低由于盾构施工引起的地表变形，从而降低事故发生的概率。

We are working with our Earth allies and with those who share a similar vision .

我们正在与我们的地球盟友一起工作与他们分享相同的观点。

Based on the analysis of the influence of working threshold on earth stations which are equipped with antennas of different apertures , a new design method of working threshold is proposed .

通过分析工作门限对不同天线口径地球站的影响，给出了一种新的工作门限设计方法。

A strong goal of all working on the Earth 's Transformation is to have the cover-up break , and having the cover-up artists taken by surprise , taken off guard , is a tool to be used .

所有致力于地球的转变的人的共同目标之一就是打破掩盖活动，我们的手段就是让那些掩盖活动的设计者大吃一惊，措手不及。

In response to the demanding of The IAU Working Group " Earth Rotation in the HIPPARCOS Reference Frame " , the observational data of Shanghai Photoelectric Astrolabe since 1974 have been reorganized , and also transferred in machine readable form .

根据IAU重新归算地球自转参数的要求，对上海天文台光电等高仪自1974年以来的观测资料作了重新整理，并录成机器可读的形式。

Briefly this paper describes the working principle of an earth tidal data acquisition and real-time processing system .

本文简要描述了固体潮数据采集及在线处理系统的工作原理和组成结构。

In earlier civilizations we have in fact had periods of contact where we were really close to you , and spent quite some time working with you on Earth .

在早期的文明，我们确实比起你们当前更近距离的接触，并且花了一些时间与你们在地球上一同工作。