The results show: Firstly, at degree 120, cumulative geoid height error is at the level of 17.616 cm with the adjusted accuracy of center of mass designed as 0 m, and errors come to 18.106 cm, 19.033 cm and 27.329 cm with the adjusted accuracy designed as 5×10-5 m, 1×10-4 m and 5×10-4 m, respectively.

結(jié)果表明：第一，在120階處国产又长又大又粗又硬视频，當(dāng)質(zhì)心調(diào)整精度設(shè)計為0 m，恢復(fù)累計大地水準(zhǔn)面精度為17.616 cm欧美电影三级在线观看；當(dāng)質(zhì)心調(diào)整精度分別設(shè)計為5×10-5 m欧美成人顶级精品视频、1×10-4 m和5×10-4 m時，恢復(fù)精度各自降低至18.106 cm91国内精品久久久久网站、19.033 cm和27.329 cm欧美一级黄片尤物视频污无毒不卡。

Several crite- rions are presented relying on all possible instances for third-order profile planning. Based on these criteria and dynamic constraints, fast and accurate algorithm of profile planning with time-optimality by preprocessing the entire profile as a whole is described. Ac- curacy losses in discrete time implementation are considered.

這類運動對精度和效率的要求極高，甚至要求納米級精度色欲影视国产精品，而軌跡規(guī)劃是超精密運動的重點和難點之一美女下部隐私扒开视频无遮挡白，其軌跡規(guī)劃精度直接決定了運動精度和性能，因此日韩在线最新专区，與此相適應(yīng)的快速精確的軌跡規(guī)劃算法成為了現(xiàn)代超精密運動系統(tǒng)必須解決的問題乱伦小说图片视频，是提高競爭力的必要手段。

Seismic formation velocity is one of important parameters for formation pressure prediction ,its precision affect the accuracy of the pressure prediction defectively.

由于地震層速度是地層壓力預(yù)測的重要參數(shù)日韩精品导航大全视频在线播放，其精度直接影響著壓力預(yù)測的精度欧美亚洲日韩ai在线博彩，利用測井約束下的波阻抗反演方法將測井、地震和地質(zhì)解釋成果結(jié)合獲取較高精度的地震層速度日韩制服丝袜无码网站视频，達(dá)到提高地層壓力預(yù)測精度的目的日韩视频在线一区第四页。

The topic in view of the existing technique level, the main factors, which influence the measurement precision of the large scale test system, are analyzed in this paper, and the solutions improving the precision are put forward.1 using the multi-channel independent AC to transfer DC module, the power supply of the digit part and the simulation part is discerption, reducing the crosstalk between the digital signal and the simulated signal;2The feedback self-checking module is constructed by singlechip compositive 16 high accuracy A/D , established a closed-loop control system through this module and improved system's overall precision effectively.

本課題針對現(xiàn)有的技術(shù)水平，分析了影響大型檢測系統(tǒng)測量精度的主要因素黄色A片区全部免费，提出了提高精度的具體方案和辦法：1采用了多路獨立交流轉(zhuǎn)直流模塊国产区精品第一页，數(shù)字部分與模擬部分分開供電，減小了數(shù)字信號與模擬信號之間的串?dāng)_免费a片小视频网站。2利用單片機集成的16位高精度A/D構(gòu)建了反饋自檢模塊美女又黄又湿又刺激又免费，通過該模塊建立了一個閉環(huán)控制系統(tǒng)，有效地改善了系統(tǒng)的整體精度日本最新黄色网站。

In the device, a four-post frame was adopted, two synchronously rotating grip holders were used to realize rigidity rotation of the specimen, and the axial movement of the upper grip holder implemented the tension/compression loading. Positioning accuracy in the axis, radial and circumferential directions were achieved by adopting many advanced and delicate technologies. Measurement on the device indicated that the actual positioning accuracy of the device was better than the kinematic positioning accuracy. Evaluation test on the system indicated that the spatial resolution is better than the pixel size without considering the noise.

該裝置采用了四柱式框架結(jié)構(gòu)另类亚洲精品网站av，采用上下夾頭同步轉(zhuǎn)動實現(xiàn)試件相對于框架的剛性轉(zhuǎn)動；上夾頭作相對于框架的軸向運動實現(xiàn)對試件的加載在线欧美视频网址www；在加載和轉(zhuǎn)動裝置中采用了諸多高精技術(shù)欧美黄频免费a，實現(xiàn)了試件高精度的軸向定位超碰黄色在线看、徑向定位和剛性角度定位；對裝置的精度檢測表明其實際的定位精度優(yōu)于運動學(xué)定位精度要求影音先锋综合网站；對系統(tǒng)的計量考評初步表明亚洲精选午夜久久无码6O80，系統(tǒng)不計噪聲的空間分辨率優(yōu)于X射線CCD的像素10.9μm。

Directed against the designed parallel welding head mechanism of IC chip pasting machine,the movement equation was established,the positive solution of motion equation was presented,and the positive and reverse solutions of velocity and acceleration were derived.

高速高精度IC芯片粘片機是IC芯片封裝的主要設(shè)備之一日韩美女自拍视频宅男，其粘片速度已超過10 000次/h日韩影音先锋av资源站，定位精度達(dá)微米級，而且粘片速度和定位精度有越來越高的趨勢[1]免费毛片A一级在线播放，但目前國內(nèi)外IC芯片粘片機的焊頭機構(gòu)都采用串聯(lián)結(jié)構(gòu)的形式久久香蕉国产线看观看亚洲卡，運動部件的慣量很大，不利于粘片速度和定位精度的提高国内一级婬片A片免费久久免费。

This thesis focus on GPS application in magnetic suspension engineering:① the formulation of oblique cylindrical projection is worked out according to characteristics of long distance precise engineering and map projection theory. The author has developed an application to accomplish coordinate conversion from generally used coordinate systems to oblique Maglev Coordinates System.② considering not only project peculiarities but also position of control points, selection of initial points, connection type, selection of repeat baseline and ground observed quantities, GPS network is designed on electronic map and we may extract GPS network information by program developed using Visual Basic 6.0 while the results are stored in control point file and baseline vector file.③estimate accuracy of various GPS networks designed on electronic map by method of 2D restriction adjustment. GPS network simulation design and accuracy estimate come true.④Predominate the rules how connection type , repeat baseline and precise baseline of range finder influence GPS network precision through comparing accuracy of various GPS network. Thereby, the solution how to establish GPS network in long distance precise engineering is figured out.

本論文主要研究GPS技術(shù)在磁懸浮工程中的應(yīng)用：①根據(jù)長距離精密工程的特點亚洲综合小说图片，從地圖投影原理出發(fā)，推導(dǎo)出斜軸圓柱投影的應(yīng)用公式日韩美女久久久无吗，并編制計算軟件一级毛片,A级毛片，實現(xiàn)從常用坐標(biāo)系統(tǒng)向斜軸磁懸浮坐標(biāo)系統(tǒng)的轉(zhuǎn)換計算；②在AutoCAD電子地圖上疯狂欧美黑粗硬大插进去了，根據(jù)工程的需要男把女日出了白浆的免费视频，并充分考慮控制點的點位、起算點的選擇一级黄色片美国、連接方式影音先锋av在线资源、重復(fù)基線的選擇和地面觀測量的選擇等因素，在電子地圖上進(jìn)行GPS網(wǎng)的設(shè)計免费黄色视频A片子，根據(jù)Visual Basic 6.0語言編程WWW.AVAV50.C0M，提取出GPS網(wǎng)資料，保存在控制點文件和基線向量文件中欧美另类69高清XXXXX；③對在電子地圖生成的各種類型的GPS網(wǎng)進(jìn)行二維約束平差的精度估算在线播放视频日韩精品免费，實現(xiàn)了GPS網(wǎng)的模擬設(shè)計與精度估算；④通過對各種控制網(wǎng)的精度比較在线视频A∨，掌握連接方式三级在线国产精品、重復(fù)基線、精密測距儀基線對GPS網(wǎng)精度影響的規(guī)律欧美日韩www，解決了長距離精密工程GPS網(wǎng)的建立方法A片在线观看免费的网站。

The measurement accuracy of the photoelectric theodolite is decided based on measurement requirement of the ballistic trajectory. Two simple equations were derived mathematically, one expression for positioning error of the ballistic trajectory, angle error of the photoelectric theodolite, ranging error, target slant range and height when one instrument is used, another expression for positioning error of the ballistic trajectory, angel error of the photoelectric theodolite, target slant range and intersection angle when two symmetrical intersection instruments are used.

通過數(shù)學(xué)解析的方法，推導(dǎo)建立了2個簡潔的公式：1）單站定位體制下彈道點位精度和光電經(jīng)緯儀測角国内永久第一免费福利视频、測距精度以及目標(biāo)斜距亚洲精品愉拍偷拍网址、高角之間的數(shù)學(xué)表達(dá)式；2）對稱交會測量體制下彈道點位精度和光電經(jīng)緯儀測角精度以及目標(biāo)斜距色战五月天天天天天、交會角之間的數(shù)學(xué)表達(dá)式狼友视频在线观看的。

A gear H62 which made in yellow brass with the same mode number m=0.34, 2mm thick and had a center hole, when the gap get C=0.5%t , and punched with compound punching die, and the dimension accuracy reached IT7, the part have a flat surface ,the verticality of tangent plane reached 89.5°, its roughness Ra magnitude are 12.5μm, height of burr are 0.10mm; and the punching part are punched with progressive die, the gap C=7%t , initial accuracy are IT11, and have an more rough surface, even can see the gap with eyes.

例如料厚t=1.5mm的H62黃銅沖裁件www.国产无码，選用C≤40%t單邊Ⅰ類小間隙沖裁比選用C≤8%tⅢ類大間隙沖裁，沖件固定誤差將加大40%～60%欧洲亚洲一级毛片一区二区高清视频，精度至少降一級中文字幕网站在线观看。此外，采有無搭邊排樣国产精品国产免费，沖件的誤差要遠(yuǎn)大于有搭邊排樣沖件日韩午夜在线试看网站免费视频。無搭邊排樣沖件。無搭邊排樣沖件的精度低于IT12級亚洲欧美日本一区，而多數(shù)有搭邊排樣的沖件精度在IT11～I(xiàn)T9級之間好痛好爽高潮来了视频在线观看，料厚t＞4mm的沖件，尺寸精度會更低一些超碰人人99。

Firstly,the sampling design has great impact on the accuracy of remote sensing classification.There exists great randomicity on the result of points and cluster sample verification on the different Sampling design.On the same sampling design,the stability of point sample verification is higher than that of Cluster sample verification.Secondly,the average accuracy of different sampling designs of multi-point and multi-cluster sample verification can reflect the accuracy characteristic.During the course of point sample verification,stratified sampling's error is lower than others'.During the course of cluster sample verification,systematic sampling and stratified sampling's accuracy are prior to simple random sampling's.

研究結(jié)果表明：（1）抽樣方式對遙感分類精度評價結(jié)果的影響是客觀存在的国产免费午夜福利天堂AV，不同抽樣方式下的點樣本和群樣本檢驗結(jié)果都存在一定的隨機性，但同一種抽樣方式下欧美精品-精品国内自产拍在线，點樣本檢驗精度評估結(jié)果的波動幅度小于群樣本檢驗亚洲天堂性爱，穩(wěn)定性比群樣本檢驗要好爱爱亚洲区女视频；（2）不同抽樣方式下的多次點樣本和群樣本檢驗的平均精度檢驗結(jié)果基本上都能夠反映分類圖像的精度特征毛片网址资源这些播放，其中，點樣本檢驗中欧美一级高清黄片视频，分層隨機抽樣點樣本檢驗效果較好人操人人人爽人人爽人人；群樣本檢驗中，系統(tǒng)抽樣群樣本檢驗和分層隨機抽樣群樣本檢驗的效果優(yōu)于簡單隨機抽樣群樣本檢驗日韩台精品电影在线观看。