In this paper, a series of lunar map projection formulas are deduced including azimuthal projections, cylindrical projections and conical projections. The lunar map projections software is compiled. By caculating lunar map projection distortions, their projection distortion rules are found. Base on the lunar exploration mission, the lunar map projection scheme is given in this paper. The azimuthal conformal projection or the circumcenter perspective azimuthal projection is usually used in small areas, especially in two poles. When the whole map of the moon is needed, the azimuthal conformal projection or the circumcenter perspective azimuthal projection is used within 10° in the poles, and the traverse tangent cylindrical conformal projection or the normal secant conical conformal projection can be used in else areas, furthermore, band-division is necessary to reduce the projection distortion.

本文推導(dǎo)了基于月球參考球的各種投影公式www.日韩黄色，主要包括方位投影麻豆国产原创视频在线、圓柱投影和圓錐投影性交网址亚洲视频；編制了月球地圖投影計(jì)算軟件欧美性爱淫淫网；對(duì)多種月球的投影變形進(jìn)行了詳細(xì)的計(jì)算，總結(jié)分析了各種月球投影的變形規(guī)律国产超污精品A级毛片；結(jié)合月球探測(cè)的需要国产com，給出了月球投影方案的建議：對(duì)于局部的面積較小的投影區(qū)域，建議使用等角方位投影或外心透視方位投影加勒比综合网站；如果繪制月面全圖野花社区www视频在线看，在兩極10°范圍內(nèi)采用等角方位投影或外心透視方位投影，其余區(qū)域可以采用等角橫切圓柱投影和等角正割圓錐投影欧美另类暴力丝袜，并且要進(jìn)行分帶處理黄网站色视频免费播放。

We expect it will benefit the industry field to break through the optical measuring limits at present by offering some new ideas. Optical measuring research based on moire interferometry has developed for several decades. The main idea of this research is to utilize the moire effect caused by two superimposed gratings of identical or similar spatial frequency. One is the reference grating and it is a virtual grating created by a computer program in this research; The other grating is the image of grating projected on the measured surface by the DLP projector, and this grating will distort because of the different sloped profile of the surface. To superimpose the program-created grating and the captured distorted grating will derive the so-called moire effect. This research combined the basic theory of optical interferometry and moire effect to project the different phases of the projected grating fringes by the phase-shifting method and compute the principal value of arguments between -π,π. In the end, the phase unwrapping program based on discrete Fourier transform of solving PDEs is used to unwrap the phase of the measured surface, and finally the surface profile is derived by the optical measuring system.

以疊紋干涉術(shù)為基礎(chǔ)的光學(xué)檢測(cè)研究之發(fā)展早已行之有年肏逼视频毛片，而在本研究中所采用的投影疊紋法(Projection moiré)之主要精神在於藉由兩道空間頻率相近或相同的光柵相互疊加而成的效應(yīng)，其中一道為參考光柵日韩一夲道无码免费视频，而本研究中的參考光柵是以程式產(chǎn)生可調(diào)整不同空間頻率的虛擬光柵真人版搞黄视频网站；另一道則為投影至待測(cè)物表面的光柵影像，而在起伏高度不一的待測(cè)表面上的光柵影像會(huì)受到待測(cè)物表面起伏狀況不同而在觀測(cè)方向產(chǎn)生光柵投影條紋影像的歪曲變形无码中文免费网站在线观看视频，將電腦產(chǎn)生的參考光柵與由影像擷取裝置所獲取投影於待測(cè)物表面的光柵影像作疊合2021_大逼色，便會(huì)產(chǎn)生所謂的疊紋效應(yīng)；利用基本的光學(xué)干涉理論與疊紋效應(yīng)結(jié)合熟妇精品视频，本研究中以相移法來(lái)改變投影於待測(cè)表面的光柵相位色色视频看片，再以相移法的理論反運(yùn)算出在帶有待測(cè)面各點(diǎn)高度資訊之介於-π人人操五月肥妇，π相位主幅角91精品啪中文字幕，再以離散傅立葉轉(zhuǎn)換解偏微分方程的相位重建程式還原待測(cè)面的相位值，以得知待測(cè)面之表面輪廓亚洲精品视频在线免费。

Place the longest dimension of the object containing circles or arcs parallel to the projection plane.

應(yīng)使物體的最長(zhǎng)尺寸結(jié)構(gòu)與軸測(cè)投影面平行66j8影。

The vertical plane of projection is normal to the direction of the component.

鉛垂投影面垂直于水平分力的方向。

Drawing instruments sre used to make the drawing in which the three principal axes make equal angles with the plane of projection .

它用繪圖儀器繪畫亚洲最新无码中文字幕久久，三主要軸線與投影面所成的角相等95视频官网。

Drawing instruments sre used to make the drawing in which the three principal ax es make equal angles with the plane of projection.

它用繪圖儀器繪畫，三主要軸線與投影面所成的角相等粉色毛片网址1。

The paper puts forth that the numerical model of actual forming part is reconstructed by RE and the surface is regarded as actual trimmed surface, then grids and nodes mapping relationship between design model and actual forming part is acquired through compelling deformation simulation, and the design trimming line is dispersed into points according to a certain precision and the projective points and the coordinate values of the intersection points of projective line on the grids formed by discrete points are calculated along trimming direction, the new coordinate values of projective points and intersection points of projective line after deformation are calculated based on the mapping relationship of grids and nodes, the deformed trimming line can be acquired through fitting the points into curve.

本文提出通過(guò)逆向工程技術(shù)重構(gòu)出實(shí)際沖壓件的型面并以此型面為修邊后實(shí)際沖壓件的型面亚欧天堂，然后采用強(qiáng)制變形仿真的方法建立設(shè)計(jì)模型和實(shí)際沖壓件重構(gòu)模型的網(wǎng)格和節(jié)點(diǎn)映射關(guān)系。將設(shè)計(jì)修邊線按一定精度離散成點(diǎn)亚日韩欧美性爱片，然后根據(jù)修邊方向計(jì)算出各點(diǎn)在網(wǎng)格上形成的投影點(diǎn)和投影線交點(diǎn)国产又大又硬又爽免费视在线观看，根據(jù)之前計(jì)算出來(lái)的網(wǎng)格和節(jié)點(diǎn)映射關(guān)系就可以計(jì)算出投影點(diǎn)和投影線交點(diǎn)在變形后的新坐標(biāo)，將其擬合成曲線就可以得到變形后修邊線的形狀日本免费A片人人片人人C人人。

This coordinate department is approximate 1954 Beijing coordinate system, central meridian is 111 degrees 00 minutes, umbriferous face 110 meters, tierce of the 37 .

該坐標(biāo)系為近似1954年北京坐標(biāo)系統(tǒng)我要操我要干，中心子午線為111度00分，投影面110米日韩无码黄色电影网站，帶號(hào)37国产一级性爱网站。

The measure system for erose object projection area uses circle lamp as lamp house and CCD as image collection unit.

中文摘要：不規(guī)則物體投影面測(cè)量系統(tǒng)，以環(huán)形燈為光源曰批视频免费观看在线、CCD為圖像采集單元免费AA午夜精品。

Additional orthographic views can be drawn to sufficiently describe an object.

為了確定物體的空間形狀，需要增加投影面A级毛片免费久久下载。