1) four-character unit
四字单位
1.
The article focuses on the bracket annotation of four-character unit in two-character vocabulary entry and two-character component in four-character vocabulary entries, and attempts to figure out the following problems as the choice of words with bracket annotations: the purpose and function of bracket annotations; the selection between bracket.
本文拟以二字词目里的四字单位括注、四字词目里的前后二字成分括注为考察对象,对括注词语的选择、括注的目的作用、词语括注和单另出条的取舍、括注内容与出条解释的照应等问题进行探究,希望为全面了解《现汉》这一括注体例及以后的修订完善提供可资参考的依据。
2) quartet
[英][kwɔ:'tet] [美][kwɔr'tɛt]
四位字节
3) four-bit byte
四位长字节
4) nibble / nybble
半字节、四位
5) unit quaternion
单位四元数
1.
Based on the unit quaternion representation of orientations of the 6/6-SPS Stewart manipulator,an analytical expression that represents the orientation-singularity locus of the manipulator at a fixed position is derived and examples are given to illustrate the result.
基于单位四元数表示并联机构动平台的姿态,推导出当6/6-SPS型Stewart并联机构动平台处于固定位置时机构姿态奇异轨迹的解析表达式,并通过计算机仿真给出姿态奇异轨迹的三维可视化描述。
2.
The concept of quaternion and its operation rules were introduced first, then formulae for space resection based on unit quaternion were deduced.
介绍四元数的概念及运算性质,提出基于单位四元数的空间后方交会解算方法并给出计算公式。
3.
Firstly the unit quaternions are used to describe rotation matrix in the algorithm.
本算法采用单位四元数描述旋转矩阵,然后对严格的共线条件方程进行线性化,并按照带有约束条件的间接平差进行迭代解算。
6) unit quaternions
单位四元数
1.
In this article,we introduced the theory of the unit quaternions into the field of the photogrammetry.
将四元数理论引入到摄影测量领域,用单位四元数对坐标旋转矩阵进行描述,提出了一种采用单位四元数描述航摄像片位置与姿态的单张像片空间后方交会新方法。
补充资料：与昂上人两字继合四句初字日
【诗文】：
有一鸟雏，凌寒独宿。若逢云雨，两两相逐。
【注释】：
【出处】：
全唐诗：卷821-46
有一鸟雏，凌寒独宿。若逢云雨，两两相逐。
【注释】：
【出处】：
全唐诗：卷821-46
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