查询词典 precession

The azimuth of the host shaft was determined with A set of Eulerian angle (precession angleψ, nutation angleθ, self- rotation angle Φ).

用欧拉角（进动角ψ、章动角θ、为自转角Φ）确定刀具主轴方位。

The first one refers to data transference, digital image precession and the facula figuration.

它的技术核心在于光斑图像处理、光斑参数设计和自动聚焦技术。

He spent 10 years in observing the gnomon of 8 "chi" and obtained a precession of the equinoxes of only one degree every 45 years and 11 months.

他花10年的观察8教程"智"，并获得了岁差的分点只有一个度每45年零11个月。

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。

So when the gyrocar tilts sideways, the precession torque generated tilts the gyroscope in a fore-and-aft direction- not much use.

因此，当gyrocar倾斜，侧身，岁差转矩产生的倾斜，陀螺在一个前列和尾部的方向没有太大的使用。

This mode is correlated closely to the solar radiation change controlled mainly by precession in Holocene.

模拟结果的EOF分析表明这种模态占模拟的全新世中国夏季降水量变化总方差的75.8%。

In addition to being a fun and intriguing gadget, the Powerball also is a great way to directly experience the Gyroscopic Effect (you know - angular momentum, linear momentum, centripetal force, precession and all those neat physics properties).

除了是一个有趣和迷人的小工具，威力也是一个好方法直接获得的经验的陀螺效应（你知道-角动量，动量，向心力，岁差和所有那些整齐的物理属性）。

Meditations of evolution increasingly vaster: of the moon invisible in incipient lunation, approaching perigee: of the infinite lattiginous scintillating uncondensed milky way, discernible by daylight by an observer placed at the lower end of a cylindrical vertical shaft 5000 ft deep sunk from the surface towards the centre of the earth: of Sirius 10 lightyears (57,000,000,000,000 miles) distant and in volume 900 times the dimension of our planet: of Arcturus: of the precession of equinoxes: of Orion with belt and sextuple sun theta and nebula in which 100 of our solar systems could be contained: of moribund and of nascent new stars such as Nova in 1901: of our system plunging towards the constellation of Hercules: of the parallax or parallactic drift of socalled fixed stars, in reality evermoving wanderers from immeasurably remote eons to infinitely remote futures in comparison with which the years, threescore and ten, of allotted human life formed a parenthesis of infinitesimal brevity.

347关于宇宙日益扩大进化的冥想：新月期的月亮，即使在近地点也看不见。从地表向地轴挖掘纵深五千英尺的圆筒状垂直轴，一个观察者呆在轴底儿上，就连白昼也辨认得出那漫无止境、网络状、亮光闪闪、非凝结性的银河。天狼距地球十光年（五七、000、000、000、000英里）；体积大于地球九百倍；大角；岁差运动；有着"猎户"腰带、六倍于太阳的"伐二"以及星云的猎户座，星云中能容纳我们的一百个太阳系；死去的和新生的星宿，例如一九0 一年的那颗"新星"我们的太阳系正朝着武仙座冲去；所谓恒星的视差或视差移动，也就是说，实际上恒星是在不断地从无限遥远的太古朝无限遥远的未来移动着。相形之下，人的寿命充其量才七十年，不过是无限短暂的一段插曲而已。

Its values, determined from different kinds of observations and models are reviewed. Moreover, its relation to precession and its effect on nutation computation are discussed.

介绍了由不同的观测方法和模型给出的地球动力学扁率值，并讨论了它与岁差的关系和对章动计算的影响。

Under the effect of every order tidal moment, the expression of precession and nutation for the CIP axis is presented.

在各阶潮汐力矩的作用下，得到CIP轴岁差章动的表达式。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。