1) Primary Direction Superposition
主方向重合
1.
Rough registration that adopts primary direction superposition algorithm can narrow 3D point cloud data and CAD model for the translation and rotation dislocation;based on rough registration,refined registration that adopts quatemion algorithm makes the two models match exactly.
粗配准采用主方向重合法来缩小三维测量点云数据与CAD数模的平移错位和旋转错位;精配准采用四元数法在粗配准的基础上使二者更为精准地重合在一起。
2) cardinal direction relation composing
主方向关系合成
3) main direction
主方向
1.
A Skew Remedy Algorithm based on Searching the Main Direction;
基于主方向检测的畸变车牌字符图像校正方法
2.
The paper presents a simple rule of visual determining main direction's general position without calculating the value of main direction's angle.
给出了一种无须计算主方向角数值即可直观定性确定平面应力状态下主方向大致方位的简单规则,并从主点法角度出发对此规则作了证明,最后还对此规则的应用作了详细阐述。
3.
The paper presents a smoothing algorithm based on the main direction combined with the mean curvature flow and the normal filter method.
该文给出了基于主方向的平滑算法,并结合平均曲率流算法和法向滤波算法进行了改进。
4) main direction
主攻方向
1.
Development in coal processing technology and its main direction in Baogang;
包钢选煤技术的发展及今后的主攻方向
2.
In order to meet the need of qunlity education and creation education,the main directions of exam reform should include the following three aspects:first,transter closed exam to openexam;secand,transfer unified exam to differentiated exam;third transter knowledge-oriented exam to ability-oriented exam.
为适应素质教育、创新教育的需要,“两课”考试改革应选准主攻方向。
5) Principal direction
主方向
1.
By use of principal directions and coordinates of center or apex of a quadric cure,a Descartes orthogonal coordinate transformation formula such as the reduced equation of the cure is expressed in terms of its invariants and semi invariants.
利用二次曲线的主方向、中心或顶点坐标 ,给出了使得曲线的简化方程由其不变量和半不变量表示的直角坐标变换公式 。
2.
By giving any angle strain rosette readings, the principal strain and the principal direction are calculated.
在结构试验中采集到的成百上千个已知任意角度应变花的读数 ,可用本文编写的计算机程序确定其主应变、主应力及主方向 ,从而替代了科研人员大量的手工计算 ,既省时省力 ,又减少差错 。
3.
The method of determining earthquake input principal direction are studied, which is used for seismic analysis of irregular bridges.
讨论了不规则桥梁地震反应分析中地震动输入主方向的问题 。
6) division of tectonic units
主探方向
补充资料：主方向
主方向
principal direction
主方向【1劝‘间山m比佣;阴姗oe“皿p~瞅] 正则曲面一点处使得曲面在该点的法曲率(加m司cun么t迎叱)达到极值的切方向.在曲面的每点或有两个主方向，或每个方向都是主方向(在平坦点〔恤t point)和脐点仁洲bili司point)).在前一种情况下，主方向是正交的，共规的，且重合于曲率标形(见加咖标形(Du妙i川iotr认))的轴的方向.若t是一主方向、则成立关系(R仪场g址公式(R喊心祀fonnula))二 V，n=一kVrr这里n是曲面的单位法向量，k是曲面r“r(“，劝沿t方向的法曲率.反之，若等式V:n=又V:r沿某方向t成立，则该方向是主方向.沿主方向的法曲率就是众所周知的主曲率(prizlciPal cun吸t切旧). EB.1场服川撰【补注】 参考文献见主曲率(pnnaPal cun旧加比).
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条