system earth的例句大全

In this paper, the third cosmic velocity i.e., the smallest velocity needed for launching an object from the earth into the space out of the solar system, is found to be 13.8km/ s, quite different from 16.7km/s given in some traditional text books.

本文计算出从地球上发射物体使其能飞出太阳系所需的最小速度，即第三宇宙速度，为13.8km/s，与一些传统教科书中给出的16.7km/s有较大的差异。

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Three-axis stabilized attitude control system for Chinese near earth orbit satellites

中国近地轨道卫星三轴稳定姿态控制系统

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Through the analysis of satellite under restrictive three-body problem that considered the gravity of the earth and the moon, differential equations of the system are established.

本文通过分析卫星在地球和月球引力下的限制性三体问题，建立了系统的微分方程。

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The characteristics of rare earth doped fibers and the principle of fiber amplifier with three-level system are described.

简述了稀土掺杂光纤的特性，以及三能级光纤激光放大的基本原理。

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Discussion on Non-earthing Neutral Point of Power Line for Low Voltage Three-phase Four-wire System

低压三相四线制中性点不接地之浅见

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In the end, sound waves Through-the-Earth communication system is simulated.

最后对透地通信系统进行了仿真。

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A Realizing Scheme of Mine Through-the-earth Communication System with Digitization

一种数字化矿井透地通信系统实现方案

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Abstract: The VLF Through-the-Earth Communication system is recognized as the most reliable way of conveying dispatching information due to its special transmission media.

文摘：由于大地信道稳定，低频透地通信被认为是最可靠的救急通信方式。

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With the development of science and technology, the applied range of sound wave Through-the-Earth communication system will become wider and wider, after Through-the-Earth communication system technology getting matured.

随着技术的发展，当声波透地通信技术成熟后，声波透地通信的应用范围会越来越广。

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The theme mainly focused on the problem how to apply Orthogonal Frequency Division Multiplexing modulation technology to the low-frequency elastic wave through-the-earth communication system which takes the layered earth for transmission medium.

本课题研究的是把正交频分复用调制技术应用在以分层大地为传输媒介的低频弹性波透地通信系统中。

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By the test system of the landing ladder on the earth which releases by an elastical structure, measure the acceleration of the ladder in the chosen directions in the process of releasing.

对弹出式着陆梯在地面环境进行释放试验，观察着陆梯释放的情况，测量着陆梯弹出过程中选定方向的加速度。本文对着陆梯结构进行设计并进行了理论分析、仿真分析和实验分析。

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Professor Wu creatively put forward the theoretical term of man earth areal system, and stresses that man earth relationship remains as the core of geographical study in all developmental stages of the discipline.

吴传钧先生创造性地提出人地关系地域系统这一科学术语，并认为人地关系是地理学的研究核心，始终贯彻地理学的各个阶段。

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In the low-frequency elastic wave through-the-earth communication system, severe Inter-Symbol Interference ( ISI) is generated and the bit error rate ( BER) is increased after transmission because of the multipath transmission caused by the characteristics of the layered earth.

在低频弹性波透地通信系统中，由于分层大地信道的多径传输特性，弹性波信号经过信道传输以后，产生了严重的码间干扰，增加了通信的误码率。

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The conclusion obtained can provide theory basis for the design of the through-the-earth radio communication system. Besides, it can provide the experiences for other non-free spaces such as underground buildings and tunnel etc and it involves some theoretic value and practice significance.

所得的结论为矿井透地通信系统的设计提供一定的理论支持，且能为地下建筑及隧道等非自由空间中的通信提供借鉴，具有一定的实际意义。

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Earth tidal data acquisition and real-time processing system

固体潮数据采集及在线处理系统

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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。

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Apparently, when we select some physical parameters of the Moon, it is necessary to consider the fact that the Earth-Moon system has been undergoing the tidal evolution.

显而易见，当选取月球的一些物理参数时，应考虑到地月系经历了潮汐演化这一事实。

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The gravity system reduction in earth tide observation at Wuchang station in China

中国武昌固体潮基准台潮汐观测结果的系统归算

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Design and Realization of Distribution Protection System of Earth Leakage Circuit Breaker Based on Time Lag Action

基于延时动作的漏电保护开关分级保护系统的设计与实现

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A discussion is given concerning the matching scheme of the selective earth leakage protection system with the shunt of artificial ground. Artificial Ground Motions Compatible with Both Specified Peak Displacement and Target Response Spectrum

对人为接地分流的选择性漏电保护系统的配合方案进行了分析拟合峰值位移与目标反应谱的人造地震动

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