tetragonal axis

Based on the character that the pathways of some points on the planet are ellipses, machining square spindle is demonstrated and the error model of machining square spindle is deduced.

基于行星机构行星轮上一些点的运动轨迹为椭圆的特性,论证了车削方轴的原理,推导出计算车削方轴之原理误差的数学模型与合理实施主轴头结构设计时关键尺寸参数确定的算式,给出了车削方轴主轴头的结构图。

Rotate the pinion gear several complete revolutions to align the bearing rollers.

转动主动齿轮若干圈以校正轴承滚柱。

axial flow reversing gas turbine

轴流式正倒车燃气轮机

He is welding the pieces of a broken axle.

他正在焊接断了的车轴。

alignment of bottom casing and bearing seating

下汽缸和轴承座找正

Measure bearings for correct clearance

测量轴承以校正间隙

inverse cylindrical orthomorphic chart

横轴圆柱正形投影图

Introducing The Coefficient of Asle Direction Changed Shape andthe Size of Angle Between Axle and Asle From the Formation of Posi-tive Equal AnoprojEction

从正等轴测图形成过程分析轴向变形系数和轴间角的大小

Install the timing chain, crankshaft sprocket and camshaft sprocket with the timing marks aligne

安装正时链、曲轴链轮和凸轮轴链轮，使正时标记对齐。

If chain is not satisfactory, remove camshaft sprocket attaching bolt and remove timing chain with crankshaft and camshaft sprockets.

若正时链不令人满意，则拆下凸轮轴链轮固定螺栓，并拆下曲轴和凸轮轴链轮的正时链。

Simple Method to Calibrate Ortho-Error of Tri-Axial Magnetic Sensor

一种三轴磁传感器正交误差校正的简便方法

KEEP BEARING STRAIGHT DURING INSTALLATION TO AVOID DAMAGE

安装时，保持轴承正直以免损坏。

orthogonally mounted accelerometer

测量轴正交安装的加速度表

CRANKSHAFT VIBRATION DAMPER TIMING MARK

曲轴震动减震器正时标记。

President Chen should not have used the name issue as a campaign topic.

陈水扁不应以正名运动作为选战主轴。

true north (north according to the earth's axis,not magnetic north)

真北（以地轴北极为正北的,非磁极之北）.

It is to reduce friction that roller bearings are used.

正是为了减少摩擦，才使用滚珠轴承。

Research on Coaxiality Calibration Technology Based on LD/PSD;

基于LD/PSD的激光同轴度校正技术研究

The Riemann Boundaray Value Problem of Non-normal Type on the Real Axis;

实轴上非正则型Riemann边值问题