英语翻译Angle MeasurementA horizontal angle in surveying has a direction or sense; that is,it is measured or designed to the right or to the left,or it is considered clockwise or counter clock wise.In the above figure,the angle at A fro m B to C

英语翻译Angle MeasurementA horizontal angle in surveying has a direction or sense; that is,it is measured or designed to the right or to the left,or it is considered clockwise or counter clock wise.In the above figure,the angle at A fro m B to C
英语翻译
Angle Measurement
A horizontal angle in surveying has a direction or sense; that is,it is measured or designed to the right or to the left,or it is considered clockwise or counter clock wise.In the above figure,the angle at A fro m B to C is clockwise and the angle from C to B is counter clock-wise.With the theologizes setup ,centered ,and leveled over at station A,then a simple horizontal angle measurement between surveying point B,A and C would be taken as follows:
(1)Commencing on,say,“face left”,the target set at survey point B is carefully bisected and the reading on horizontal scale is 25°
(2)The upper plate clamp is released and telescope is turned clockwise to survey point C.The reading on horizontal circle is 75°
(3)The horizontal angle is then the difference of the two directions,i.e.(75°- 25°) = 50°
(4)Change face and observe point C on “face right”,and note the reading= 255°
(5)Release upper plate and swing counterclockwise to point B and note the reading= 205°
(6)The reading or the direction must be subtracted in the same order as 255°- 205°= 50°
(7)The mean of two values would be accepted if they are in acceptable agreement.
Modern electronic digital theologizes contain circular encoders that sense the rotations of the spindles and the telescope,convert these rotations into horizontal and vertical (or zenith) angles electronically,and display the value of the angles on liquid crystal displays (LC Ds) 17 or light-emitting diode displays (LE Ds) .These readouts can be recorded in a convention al field book or can be stored in a data collector for future printout or computation.The instrument contains a pendulum compensator or some other provision for indexing the vertical circle readings to an absolute vertical direction.The circle can be set to zero readings by a simple press of a button or initialized to any value on the instrument.
Azimuth is the horizontal angle measured in a clockwise direction from the plane of the meridian,which is a line on the mean surface of the earth joining the north and south poles.Azimuth ranges in magnitude from 0° to 360°,values in excess of 360°,which are so me times encountered in computations,are simply reduced by 360° before final listing.Bearing is the traditional way of stating the orientation of the line.It is actually the angle measured from the north or south.The bearing,which can be measured clockwise or counterclockwise from the north or south end of the meridian,is always accompanied by letters that locate the quadrant in which the line falls.For example,bearing N32°W indicates a line trending 32° west of the north.It is equal to an azimuth of 328°.Bearing S12°W indicates a line trending 12°west of the south.It is equal to an azimuth of 192°.It is important to state that the bearing and azimuth are respect to true north.

英语翻译Angle MeasurementA horizontal angle in surveying has a direction or sense; that is,it is measured or designed to the right or to the left,or it is considered clockwise or counter clock wise.In the above figure,the angle at A fro m B to C
角度测量
测量的一个水平角度或者感觉有一个方向;也就是说,它是衡量或设计向右或向左,或被认为是顺时针或台面时钟智慧.在上面的图,分析了在有偿B C是顺时针方向和角度从C到B clock-wise正相反.与theologizes设置、集中,并确保在站了一个,然后一个简单的水平角度测量测量B点之间,A和C会采取如下:
(1)自,说,“面对左",目标设定在B点的调查是精心bisected和阅读水平尺度25°
(2)上盘钳被释放和望远镜转顺时针方向旋转点阅读调查c水平圆是75°
(3)水平倾角的差异则是两个不同的方向,那就是.(75°~25°)= 50°
(4)变化的脸和观察摄氏度“向右看齐”,注意阅读= 255°
(5)释放顶板及摇摆逆时针方向,注意到B点阅读= 205°
(6)阅读或方向,必须减去按照相同的顺序为255°- 205°= 50°
(七)两种数值的意思,如果他们能够被接受为可接受的协议.
现代的电子数字theologizes含有圆形旋转编码器,感受到的主轴,望远镜,转换这些在水平和垂直方向的旋转角度(或天顶)电子、和显示的价值的角度对液晶显示器(LC Ds)17或发光二极体显示器(乐Ds).这些数据可以被记录在一个公约领域或铝书存储在一个数据采集器对未来打印或计算.该仪器包含一个摆补偿器或其他条款的垂直循环为索引读物绝对的垂直方向.圆形图样可设置为阅读用一个简单的一个按钮的新闻媒体或初始值的仪器.
水平倾角测量方位角以顺时针方向从飞机的经络,哪一个