查询词典 length of arc

The author puts emphasis on the control method of self-adaptation arc length, the criterion of iterative convergence, and discriminant mark of failure, then, works out appropriate computer software.

重点讨论了自适应的弧长控制法，迭代收敛标准、破坏判别标志等技术问题，编制了相应的计算软件。

This limit is called the line integral of f along C from A to B with respect to arc length; that is

时 ，该黎曼和有极限，该极限就叫做沿曲线从 A 到 B 对弧长的曲线积分。

In order to solve the problem of chart projection transformation among all projections in shiphandling simulator,using the theory of power series spreading out and the method of trigonometric power series calculating back, a direct and reverse solving algorithm models of meridian arc length , and Gauss projection and Mercator projection transforming algorithm are introduced in this paper.

为了解决船舶操纵模拟器中不同投影方式海图的投影变换问题，应用幂级数展开理论和三角级数回求方法，给出了子午线弧长、等量纬度的直接正反解算法模型及高斯投影与墨卡托投影的相互转化算法。这些算法具有非常高的计算精度，避免了迭代运算，在船舶操纵模拟器中得到广泛应

After the death of purgatory The great pyramid of khufu's four cant is on the east, south, west and north, error less than three points, the arc length 230 meters, the bottom layer due to the tower, now penciling limestone shorter for 227 meters, the Angle of 51 degrees 52 points.

胡夫大金字塔的4个斜面正对东、南、西、北四方，误差不超过圆弧的3分，底边原长230米，由于塔外层石灰石脱落，现在底边减短为227米，倾角为51度52分。

This paper introduces the basic principle of the calibration of pointing accuracy of electro-optic phototheodolite with the Star arc-length.

本文详细介绍了星体弧长法标定光电经纬仪指向精度的基本原理，对标定精度进行了分析，指出了影响其精度的因素，并对其应用到靶场的外场实时检测方法进行了探讨。

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：榆阳区生态系统土壤保持功能价值动态变化研究；利用ERDAS8.5对遥感数据进行解译获得榆阳区土地利用数据和植被信息，利用R2V5.5数字化榆阳区政区图、地形图、植被图、土壤分布图及气象站点分布图，利用ARCINFOR8.3对各数字化图层进行投影转换、泰森多边形生成、DEM构建和叠加分析，利用ARCVIEW3.3从DEM数据中获取榆阳区的坡度、坡长面域数据，并将上述各图层格网化，然后通过栅格图层叠加分析和代数运算获取榆阳区生态系统土壤保持功能物质量和价值量时空动态变化数据，最后分析了其变化的时空特点及形成原因。

along the hairline, one arc-shaped incision about 5 cm in length with a center at the surface projecting point of the sphenoid ridge root, extending from the temples to the point 39 mm anterior to the otobasion superius, is an ideal skin incision via the pterional keyhole approach with intact frontal facial nerve.

以蝶骨嵴根部的体表投影为中心，作起于鬓角，沿发际前缘弧形向下，止于耳上基点前39 mm，位于发际内的长约5 cm的翼点锁孔入路切口，是不损伤面神经的理想切口。

The data, which was obtained by calculation, was imitated and the experiential formula for the relation of the max external pressure resisted under the condition of different ratio between straight section length and the end arc radius on the flatted tube.

并对计算分析取得的数据进行拟和得到了扁管在直边段和圆弧半径的不同比值条件下能承受最大外压力的关系及经验公式。

Analysis and research were made for relation about max external pressure resisting capacity under condition of different ratio between straight section length and end arc radius on the flatted tubes with same circumference and tube wall thickness by using analytical technology of finite element.

应用有限元分析方法，对相同周长、相同壁厚的扁管在直边段和圆弧半径的不同比值条件下与所能承受最大外压力的关系进行了分析。并对计算分析取得的数据进行拟和得到了扁管在直边段和圆弧半径的不同比值条件下能承受最大外压力的关系及经验公式

Nalysis and research were made for relation about max external pressure resisting capacity under condition of different ratio between straight section length and end arc radius on the flatted tubes with same circumference and tube wall thickness by using analytical technology of finite element.

bstract 应用有限元分析方法，对相同周长、相同璧厚的扁管在直边段和圆弧半径的不同比值条件下与所能承受最大外压力的关系进行了分析。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了