This company, located at Yantai-a beautiful port city, is one of the specializingmanufacturers of track roller, carrier roller, pedrail assembly large bulldozer and excavator.
它地处美丽富饶的港城——烟台，海陆空交通便利，是国内专业生产大马力推土机、挖掘机等工程机械履带总成和支重轮、托链轮总成的专业化厂家之一。
Number of track rollers: 4 single-flange on each side 2 double-flange on each side Number of carrier roller: 2 on each side Number of front idler: one on each side Track type: single grouser, modular type.
履带涨紧型式液压涨紧节距 203 mm 单侧履带板数量 38块履带板宽度 500mm 履带接地长度 2570mm 密封和润滑履带该履带的节距、履带板数量、履带板宽度与普通履带相同。
At present, this company has an annual output of 20, 000 pedrails, 80, 000 track roller and carrier rollers.
目前公司已形成年产履带20000条，支重轮、托链轮80000只的生产能力。
The PLL circuits has the characteristic of carrier track. As a narrow band fitter, it can pick up the signal which is submerged in the noise. When it is locked with a high-stable reference oscillator, it can be a high-stable frequency source which can offer series of frequency.
锁相环路具有载波跟踪特性，作为一个窄带跟踪滤波器，可以提取淹没在噪声之中的信号；用高稳定的参考振荡器锁定，可以提供一系列频率高稳定的频率源。
To reduce the impact of carrier frequency offset in OFDM system, we propose a new adaptive frequency offset tracking algorithm based on cyclic prefix in this paper. This algorithm uses cyclic prefix to estimate and track frequency offset.
为了减小正交频分复用系统受频率偏差的影响，本文提出了基于循环前缀的频偏自适应跟踪算法，该算法利用循环前缀，对载波频偏进行跟踪。
However, some problems still exist, such as the failure to track carrier phase with frequency offset and so on.
原理上，全数字接收机的定时同步和载波同步既可以联合实现，也可以分别实现。
A device records information in blocks having logical addresses at a physical address in a track on a record carrier.
一种设备把具有逻辑地址的块的信息记录在记录载体的轨道上的物理地址处。
The invention discloses a method for dynamic channel allocation in TDD-CDMA mobile communication system. Based on the distance between mobile station and subzone base station BS, mobile stations MS are classified. Code tract in same group of code track (carrier frequency + time slot) is allocated to the mobile station with nearer distance. MS with different distances have different requirements of emission power. Whether crossed time slot code track group can be used or not, and use of group of code track with what kind of multiplexing factor need to be determined.
本发明公开了一种TDD－CDMA移动通信系统的动态信道分配方法，是将移动台MS按照与本小区基站BS的距离进行分类，同一个码道组中的码道分配给距离相近的移动台MS；同时不同距离的MS对发射功率的要求不同，对相邻小区的干扰也不同，系统根据MS对发射功率的要求，确定其是否可以使用交叉时隙码道组和使用哪种复用因子的码道组。
In order to solve the problems that accident of lane way transportation occurs frequently and at present some system of lifting signal device, resisting device of carrier, the controller of winch inverter-driven are bought from different company used in coal pit. Each system has its own equipment different from each other, it cause a lot of waste. And the waste of management and maintenance are increasing because of the difference of equipment. When lane way two track lifting, the worker underside may pull the rail switch incorrectly. It may lead to economy losses and even injury and death of person. This thesis designs an integrated monitoring and control system for lane way safety.
针对斜巷运输事故多发以及目前有些矿井斜巷采用的提升信号系统、挡车装置、变频器控制等设备来自不同厂家，每个系统均上一套设备，造成资源严重浪费，且设备规格、型号不同，致使管理和维护工作量增大等现象，以及针对斜巷双轨提升时，下口扳道工可能扳错道岔，轻者造成经济损失，重者造成人员伤亡的情况。
Carrier vehicle to install GPS positioning and the drive recorder system, a 24-hour monitoring to track the routing, speed records, valves touch, driving time, stop location to ensure that the distribution of work safety, efficient operation.
承运车辆配置安装GPS定位及行驶记录仪系统，24小时监控跟踪行驶路线，超速记录，阀门触动，行驶时间，停驶位置等情况，确保配送工作安全，高效运行。
Differentiating obstacle system was designed in order to ensure the carrier vehicle to run safely on the track.
障碍物判别系统是为数字农业研究平台车在轨道上安全运行而设计的。
Using induced fission-track method, mobilization and redistribution of uranium in carrier minerals were discovered to be driven by mobilization and migration of uranium in accessory minerals of U-producing granites along microfissures and the self-purification of hydrothermal alteration.
采用诱发裂变径迹法研究，发现华南产铀花岗岩副矿物中的铀沿微裂隙活化转移和交代蚀变矿物的自洁作用迫使载体矿物中的铀活化再分配的地球化学现象。
Digital track map, which is constructed low-cost, as a stable and effective information carrier, is an important application of Geographic Information System in rail transport and plays a fundamental role in the improvement train positioning accuracy and auxiliary of train operation control.
数字轨道地图是地理信息系统在轨道交通方面的一个重要应用，作为一个稳定有效的信息载体，建设成本低，在提高列车定位精度和辅助列车运行控制方面有着基础性的作用。
The land-based missile is designed to target and track aircraft carrier groups with the help of satellites, unmanned aerial vehicles and over-the-horizon radar.
路基导弹被设计为在卫星，无人飞行器和视距内雷达的帮助下定位和跟踪航母。
As the final carrier of the research-research papers, track and field project selection, training, recovery means, the game provides theoretical support, but also reflect the level of development of track and field research.
而作为科研最终的载体&科研论文，能够为田径运动项目的选材、训练、恢复手段、比赛等提供理论支持，也能反应田径科研的发展水平。
Based on the carrier maneuverability law in scene matching process, the paper presented a method for eliminating the mismatching points when the flight track was approximated to a straight line.
但在景象匹配过程中会不可避免的会出现匹配错误、匹配精度不够等问题，为此，基于景象匹配过程中载体机动性能规律，提出了飞行航迹近似为直线的误匹配点剔除方法。
In order to acquire and track the spread spectrum signal rapidly, the changing band-width tracking strategy is adopted, which uses the quadrature frequency discriminator, Cross Product and Costas together to keep the carrier loop.
为了能够快速地对扩频信号进行捕获跟踪，采用了四相鉴频器、符号叉积频率跟踪算法和科斯塔斯环混合进行载波跟踪的变带宽跟踪策略。
Problems of independent walking of mobile carrier and energy optimization during controlling mechanical arm track are studied, which aims at the low level of intelligence of the EOD robot and its lack of autonomous control function.
针对遥操作排爆机器人智能化程度低及自主控制功能不足等问题，研究了移动载体的自主行走及机械臂轨迹控制中的能耗优化问题。
Considering the impact of code Doppler frequency in high dynamic environment, the technology of carrier auxiliary code tracking loop is used in this paper to track high dynamic spread spectrum signal in narrow loop bandwidth. This loop can suppress noise and improve tracking precision.
考虑到高动态环境下码多普勒频率的影响，文中利用载波环辅助技术使码跟踪环可以在较窄的环路带宽下跟踪高动态的扩频信号，从而能更好的抑制噪声，提高跟踪精度。
In this paper, we are going to use high speed digital signal processor, track the carrier wave through the digital phase locked loop, and so to demodulate the modulating signal.
而我们这里就是准备用高速数字信号处理器，利用数字锁相环实现对载波的跟踪，从而实现调制信号的解调，它能有效克服其他解调方式所遇到的困难。