查询词典 drift

The Tundra of the Arctic Regions These are the signs of the coming arctic winter:The color of the tundra changes as the water grasses turn brilliant red.The migratory birds gather in flocks along the coast and gradually drift southward.Most of the birds that have spent the brief summer on the tundra now disappear,leaving only the golden eagle,the gyrfalcon,the ptarmigan,and the snowy owl to brave the sunless northern winter.

北极地区的苔原这些都是北极地区冬季即将来临的征候：随着水草变成艳红色，北极苔原的颜色也改变了；候鸟沿着海岸成群聚集，并逐渐南移；在苔原度过短暂夏天的大部分鸟类现已消失，只剩下金鹰、白隼、松鸡和雪白色的猫头鹰来迎接这没有太阳的北极之冬。

This course consists of three parts : A.The fundamental theory of gyroscopes. a.Kinematics and dynamics of gyroscopes, consisting of Coriolis acceleration, theorem of angular momentum, Euler's dynamical equations, dynamical explanation of gyroscopes' properties. b.Gyroscopes' motion equations, including the complete equations, technical equations and precession equations derived from Euler's dynamical equations, and the technical equations derived from static vs. dynamic method. c.Analysis of gyroscopes' motion. d.Coordinate systems and their mutual transformation. e.Gyroscope drift and its measurement. B.Principle of typical gyroscope instruments, such as gyro compass, gyro north finder, gyro horizon, platform compass, rate gyroscope and integrating gyroscope. C.Principles and applications of new-type gyroscpes, such as electrically suspended gyro, ring laser gyroscope, fiber optical gyroscope, hemispherical resonator gyro, dynamically tuned gyroscope and micro inertial sensors.

本课程教学内容由三部分组成：陀螺仪的基本理论，内容包括：陀螺力学基础（哥氏加速度、角动量定理和欧拉动力学方程、陀螺特性的力学解释）；陀螺仪运动方程和运动分析（用欧拉动力学方程建立完整方程、陀螺仪运动的技术方程和进动方程，用动静法建立技术方程）；坐标系及其变换；陀螺仪的漂移及其测试；典型陀螺仪器（包括陀螺罗经、陀螺找北仪、陀螺地平仪、平台罗经、速率陀螺仪和积分陀螺仪等）的工作原理；新型陀螺仪（包括静电陀螺仪、激光陀螺仪、光纤陀螺仪、半球谐振陀螺仪、挠性陀螺仪、微机械陀螺仪等）的原理及应用。

A brief introduction of gyro's development process and conception of drift is presented on the paper.

本文首先简要介绍了陀螺仪的发展历程以及漂移的概念。

The software system of gyro drift testing is introduced and it is carried out by VB finally.

最后介绍了利用VB语言设计陀螺漂移测试的软件系统。

The equipment and environment of fiber of gyroscope zero-drift experiment are introduced.

介绍了光纤陀螺零漂实验的设备环境，硬件和软件的构成及数据采集过程。

The temperature drift is one of the most important error sources and influences the measuring accuracy of gyroscope greatly.

温度漂移是陀螺角度误差的主要误差源之一，严重影响了陀螺的测量精度，因此需要对陀螺角度输出误差进行补偿。

But although the source of such foul space weather is known—it happens when giant flares on the surface of the sun pour out more protons and electrons than normal—the details depend on structures within the magnetosphere that are only now coming under scrutiny. Sometimes storms drift past the Earth with little impact. On other occasions they pummel the magnetosphere's crown to about half its normal distance from the Earth's surface.

曾有一段时间太阳表面巨大的火焰散发出比平常更多量的质子与电子，可尽管恶劣天气状况的原由已被人们所知，然而磁气圈内的结构的详细情况直到目前才得到人们的重视并受到详细审核。

The power variation of the targeted harmonic signal and harmonic suppression ratio were calculated and evaluated. The theoretical caculations and simulated results suggest that power variation can be maintained within 1 dB with dc bias drift less than 5% and the harmonic suppression ratio is stable in the SSB RoF link.

理论计算和仿真结果表明，偏置漂移会使目标信号的功率抖动增大，但当偏置漂移量小于5％时，功率抖动小于1 dB，而谐波抑制比保持稳定；分析了与非理想光电调制器啁啾相关的有限消光比和双臂驱动不平衡度对RoF链路性能的影响，有限消光比会增加目标信号的功率抖动并降低谐波抑制比，而通过优化调制器的双臂驱动不平衡度可以提高单边带调制RoF链路性能。

Which had championed untrammelled emotion as the fount of altruism, could easily spill over into self-indulgent histrionics; the sincerity they valued as the highest good could drift into self-deception and selfishness.

他们开始认识到，18世纪后期对敏感顶礼膜拜，将未驾驭的情感视为利他主义之源泉，却往往过于汹涌而沦为个人放纵的表演；而真诚----曾被视为世间最美好品质----却滑向了自欺欺人和自私的泥潭。

Ho-hum,let it slide.I'll just drift along.

这是多么可悲的疾病啊！

The use of the web to spread fears that flicking the switch on the LHC could create a Black Hole that could swallow up the Earth particularly concerned him, he said.

他说，使用互联网散布恐慌说启动LHC会生成一个可能吞噬地球的黑洞的做法让他感到忧虑。

Not a single word have I written down.

我一个字也没有写下来。