Whereas parallel projections are used to project points onto the image plane along parallel lines, the perspective projection projects points onto the image plane along lines that emanate from a single point, called the center of projection.

與平行投影沿著平行線將物體投影到圖像平面上不同国产第页，透視投影按照從投影中心這一點發(fā)出的直線將物體投影到圖像平面。

The first section is descriptive geometry, including basic knowledge of cartography and projection, projections of point, beeline, plane and their interrelations, projection transformation, curve, curving plane, the projection of curving plane solids, line of section, line of intersection, section and segmentation, elevation projection, dimetric projection.

第一部分為畫法幾何：其中有制圖基本知識goy123。com，投影的基本知識在线看黄官网，點福利一区视频、直線欧美一区亚洲一区视频在线观看、平面的投影及它們之間的關(guān)系，投影變換免费观看的午夜成年网站，曲線亚洲免费每日在线观看一级性生活片、曲面及曲面立體的投影，截交線與相貫線亚洲日韩在线综合一区视频，剖面圖與斷面圖91精品啪在线观看国产麻豆免费，標(biāo)高投影，軸測投影等日韩老司机深夜无码影院视频。

Isometric projection , a species of orthographic projection, in which but a single plane of projection is used.

正規(guī)投影正交投影的一種人人干日日爱，通常用在單一平面的投影上。

Instead of areas, the peripheries of each plane of projection were used to predict the activities of compounds.

用每一個平面的投影邊緣代替面積預(yù)測化合物的活性永久黄网色视频免费观看。

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免费能看黄的网站。

At right angles to the plane of projection.

如果我們將物體放在銀幕前，然后利用燈光作正面照射日韩高清性爱网站，屏幕上便出現(xiàn)該物件的影子亚洲中文字幕欧美国产；同樣原理，若我們從正面觀測物件妓女视频在线观看网站，所得到的就是直角投影毛片无码在线看。

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，三主要軸線與投影面所成的角相等喷水毛片一级。

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

它用繪圖儀器繪畫亚洲网站精品，三主要軸線與投影面所成的角相等日韩欧美深夜精品福利视频。

It proposes idiographic schema to rationally choose projection zone and perspective plane. The choice of projection zone and perspective plane in the establishment of plane coordinate system of GPS network in Datong mining area has validated that the schema is feasible.

提出了合理選擇投影帶和投影面的具體方案，并以大同礦區(qū)GPS網(wǎng)平面坐標(biāo)系統(tǒng)建立中投影帶和投影面的選擇實例驗證了該方法在實際應(yīng)用中是切實可行的裸体女人毛片。

When processing data in controlling survey, we usually project twice (land surface→according to ellipsoid plane→gauss projection plane) and it brings about Deformed projection twice too. It is not good for large scale mapping and setting-out of project construction.

控制測量在數(shù)據(jù)處理時天天透天天狠狠狠的，通常要進行兩次投影（地面→參考橢球面→高斯投影平面），也相應(yīng)地產(chǎn)生兩次投影變形在线观看美女一区，不利於大比例尺測圖和工程施工放樣亚州一级特黄片免费视频在线。