By the establishment of the related computer program,the various improvement to the traditional method is made,and the method of vector algebra is applied to calculate the safety factor of block model.The automatic implementation of the stability analysis and evaluation of weage rock mass are acchieved by the program.

傳統(tǒng)的做法是在野外結構面測量的基礎上超级毛特级毛一级毛，通過手工赤平投影的方法，確定各結構面的交線產(chǎn)狀，由此確定滑面的大小及楔形體上的作用力[3]；最后在明確了楔形體大小和受力的基礎上色阁视频一区在线视频，用極限平衡理論計算楔形體的穩(wěn)定性[4]。

The sixth part: Studies on the dynamic changes of soil retention function value of ecosystem in YUYANG District. Utilized ERDAS8. 5 to interpret the remote sensing image and get LUCC data and vegetation information of YUYANG District. Utilized R2V5. 5 to digitize administrative map, topographic map, vegetation picture, soil distribution map and meteorological website map. Utilized ARCINFOR8. 3 to change every digitization layer to the same projection, to generate Tyson polygon, to structure DEM and do vector polygon overlay. Utilized ARC VIE W3. 3 to obtain the grid data topographic slope and slope length from DEM data of YUYANG District, and then, turned every coverage layer into grid layer and do grid polygon overlay to gain data about dynamic changes of value of soil retention of ecosystem in YUYANG District, at last, the author analyzed the features of the spatial-temporal changes and its reason.The seventh part: Studies on the dynamic changes of fixing drifting sand against wind function value of ecosystem in YUYANG District.

第六部分：榆陽區(qū)生態(tài)系統(tǒng)土壤保持功能價值動態(tài)變化研究国产黄色视频在线看二区；利用ERDAS8.5對遙感數(shù)據(jù)進行解譯獲得榆陽區(qū)土地利用數(shù)據(jù)和植被信息插的爽视频，利用R2V5.5數(shù)字化榆陽區(qū)政區(qū)圖、地形圖人人操人人搞人人摸、植被圖成年人黄色网站视频在线观看、土壤分布圖及氣象站點分布圖，利用ARCINFOR8.3對各數(shù)字化圖層進行投影轉換国产免费看又污又爽又黄的网站、泰森多邊形生成、DEM構建和疊加分析色男人天堂网址，利用ARCVIEW3.3從DEM數(shù)據(jù)中獲取榆陽區(qū)的坡度欧美丰满大乳大屁股流白浆爽、坡長面域數(shù)據(jù)，并將上述各圖層格網(wǎng)化国产福利最新，然后通過柵格圖層疊加分析和代數(shù)運算獲取榆陽區(qū)生態(tài)系統(tǒng)土壤保持功能物質量和價值量時空動態(tài)變化數(shù)據(jù)先锋每日资源涩涩，最后分析了其變化的時空特點及形成原因。

The scale-type geometric wear-resistant structure surface is characterized in being made up of a base and the bionic geometric units on the surface. The bionic geometric structure unit is a scale-type structure distributed regularly on the surface of the base, and the distribution density is that: the ratio between the geometric projection area of the scale-type structure on the base surface and the surface area of the base formed by all the edge ends is 50-100%; the scale-type geometric structure unit has a symmetric hexagon shape on the surface; the sides L2/L1=1.0-2.0, L1: 1mm-50mm, and the internal angle Alpha is 120 degree -130 degree, the internal angle Beta is 100 degree -110 degree; the A-A section is subtriangular, and the B-B section is a trapezoid, the height H of the scale-type is 1-5mm.

本發(fā)明由基體和其表面上的仿生幾何結構單元組成欧美淫秽，仿生幾何結構單元為在基體表面規(guī)律分布的鱗片型結構久操视视频一区二区，鱗片型的分布密度為：其在基體表面上的幾何投影面積之和與所有棱端圍成的基體表面積之比為50-100％，鱗片型幾何結構單元的表面形狀為對稱六邊形結構：邊長L2/L1＝1.0-2.0AV无码精品久久久久精品免费，L1：1mm-50mm亚洲A级黄片免费看，內角α為120°-130°，內角β為100°-110°亚洲成年人在线免费，鱗片型的A-A截面為近似三角形操逼A片，B-B截面為梯形，鱗片型的高度H為1-5mm亚洲皇冠成人无码影院在线观看。

According to the design principle and basic characteristic of the gear shaper cutter , its rake angle and top face are adjusted, and the cutter blade projection on the datum plane is modified appropriately to finish the profile modification of K-teeth in gear shaper cutting process.

針對插齒加工過程中K形齒的修形問題igao国产，根據(jù)插齒刀的設計原理和基本特點，提出了以改變插齒刀的前角和前刀面形狀來改變切削刃在其基面上的投影亚洲人成亚洲精品，達到在插齒加工中對齒形的修形的目的国产原创同事在线视频。

In order to improve the efficiency of the collision detection for two convex polytopes, this paper proposes a fast projection-separation approach.

為了有效地提高凸面體之間的碰撞檢測效率，提出一種凸多面體快速碰撞檢測的投影分離算法青青国产在线视频。

Since range searching in three-dimensional (3-D) is expensive, and since the surfaces are in fact topologically two-dimensional (2-D) entities, point projection to a plane is used.

盡管在三維空間里范圍搜索是非常耗時的并且實際上那些面在拓撲上是二維的黄网页观看，但還是使用了點投影到曲面在线国内在线播放av。