三角仪

Methods Two hundred and ninety seven middle-aged and aged females were sampled randomly from the cases who were examined in the bone mineral density measurement department of The Second Affiliated Hospital of Nanchang University from January 2004 to January 2006, and their age, stature and body weight were recorded exactly. The BMD of lumbar (L2~4), femoral neck, Ward's and great trochanter was measured by dual energy X-ray absorptiometer, then statistically analyzed.

从2004年1月～2006年1月在南昌大学第二附属医院骨密度测定室检测的就诊者中随机抽取297例中老年妇女，准确记录其年龄、身高、体重；采用法国DMS公司Challenge：双能X线骨密度测定仪检测腰椎(L2~4)、股骨颈、ward's三角以及大转子的BMD，然后进行比较和统计分析。

The conventional aerotriangulation solves only the elements of exterior orientation 〓ω,κ, X〓, Y〓, Z〓 of photo, whereas the elements of interior orientation x〓, y〓, f of aerial camera are often determined in the laboratory. As the laboratory methods can not take into full account the actual conditions in aerophotography, large deviations often occur.

长期以来，航摄仪的内方位元素主要在实验室采用物理方法检定，而像片的外方位元素则主要依靠空中三角测量和大量地面控制点间接解求。

This spectrometer can communicate with general purpose computer and can be controlled by it also.This spectrometer is high automatic and has powerful data processing ability. Single-chip microcomputer,Mssbauer spectrometer,Software

MS—2000型穆斯堡尔谱仪相对于FH—1918型Mssbauer谱仪具有以下新功能：能产生线性度很好的三角波，提高了Mssbauer谱的准确程度；自动单道测量γ能谱，并"卡"γ共振能峰犤5犦；谱数据掉电保护功能；上电自动

This study thoroughly inspects reciprocal method and leap-frog method of EDM trigonometric leveling along with relationship between EDM height, ellipsoid height, and orthometric height. An experimental area with 200m, 400m and 600m span intervals were set up with vertical angle error ±1.5〞and EDM error ±（2mm+2×10-6×Smm）.

本研究规划实验区实地针对200m、400m、600m三种测段长，采用之全测站仪之垂直角中误差为±1.5〞，测距中误差为±（2mm+2×10-6×Smm），进行EDM三角高程测量，并对测量方法及观测成果精度进行分析，实际探讨短距离EDM三角高程代替水准测量的可能性。

Triangle - a two-dimensional quality mesh generator and delaunay triangulator, used in NCL's contouring package for

Triangle -一个二维量网格产生器和delaunay三角仪，曾在用于不均匀网格的NCL线性包中使用。

It is introduced that with two total station instrument s after transforming to set up the station arbitrarily,the deduction for formula and the calculation for error are made to evaluate the differences in elevation with the subtending measurement of trigonometric leveling.

介绍了用两台改造后的全站仪任意置站的方法进行三角高程对向测量求取高差的公式推导和误差计算，论述了用三角高程测量代替二、三等水准测量的可行方法，测量时不必量取仪器高、目标高，减少了三角高程的误差来源，加快了施测速度。

It is introduced that with two total station instruments after transforming to set up the station arbitrarily,the deduction for formula and the calculation for error are made to evaluate the differences in elevation with the subtending measurement of trigonometric leveling .

介绍了用两台改造后的全站仪任意置站的方法进行三角高程对向测量求取高差的公式推导和误差计算，论述了用三角高程测量代替二、三等水准测量的可行方法，测量时不必量取仪器高、目标高，减少了三角高程的误差来源，加快了施测速度。

This paper is on the basis of principle of trigonal height measurement of total station,combined working practice,and analyzed the influence to trigonal height measurement precision of total station by the law of error propagation,we concluded the factors influence the precison of trigonal height survey of total station,so as to call attention to us in our jobs.

根据全站仪三角高程测量原理，结合工作实践，通过误差传播定律对影响全站仪三角高程测量精度进行分析，找出影响全站仪三角高程测量精度的因素，以便在测量工作中能够提高测量精度。

The paper introduces the latest development and application in the production of engineering survey technology. GPS allocation technology and the combination of GPS and total station have been widely used in plane surveying of control survey. Electron distance trigonometric leveling can replace third and fourth-order spirit leveling in vertical survey. Data collection, processing and drawing by total station has achieved automation and integration in topographic survey, etc.

随着工程测量技术的发展，控制测量中平面测量已广泛地采用了GPS定位技术、GPS与全站仪相结合的技术，高程测量中电子测距三角高程能代替三、四等几何水准测量；地形图测绘中，实现了全站仪从野外数据采集、处理到绘图过程的自动化和一体化；摄影测量和高分辨率遥感技术在大比例尺地形测图中的应用等。

This experiment counts based on the direct digital frequencysynthesis the basic principle, fully II and hardware LT - IV testedthe box using ALtera Corporation's FPGA chip FLEX10 in softwareMaxplus in the platform to complete the DDS system design, hasdesigned a frequency and the phase may control has the sine and thecosine output direct numeral frequency synthesizer, was allowedto control and to observe the profile through the downloading boardand the oscilloscope, completed in the enhancement request hascontrolled the frequency and the phase through the downloading boardon pressed key, as well as many kinds of profiles, includingsquare-wave, saw-tooth wave, triangle wave and cosine wave choiceoutput, In addition on digital tube dynamic demonstration productionprofile frequency, and produces the tbl document from the simulationprofile, simultaneously draws the profile using the matlab higherorder language.

涂层测厚仪-帮忙翻译一下，谢谢涂层测厚仪-帮忙翻译一下，谢谢帮忙翻译一下，谢谢本实验基于直接数字频率合成计的基本原理，充分利用ALtera公司的FPGA芯片FLEX10在软件MaxplusⅡ和硬件LT—IV实验箱的平台上完成了DDS系统的设计，设计了一个频率和相位均可控制的具有正弦和余弦输出的直接数字频率合成器，通过下载板和示波器可以控制和观察波形，在提高要求中完成了通过下载板上的按键来控制频率和相位，以及多种波形，包括方波、锯齿波、三角波和余弦波的选择输出，此外在数码管上动态显示生成的波形频率，并且从仿真波形中生成tbl文件，同时利用matlab高级语言画出波形。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。