chord n. 1.〔诗〕(琴)弦;(心)弦;【音乐】和弦,和(谐)音。 2.【航空】翼弦;【数学】弦;【解剖学】腱,带;【建筑】弦材,桁材。 the major [minor] chord大[小]三和弦。 the spinal chord脊髓。 the chord organ 和音(电子)风琴。 vocal chords 声带。 strike a responsive chord打动对方心弦。 touch the right chord 触及心弦。 vt. 上…的弦;调(弦)。 vi. 1.调和,和谐。 2.弹奏。
length n. 1.长,长度,长短。 2.(时间的)长短,期间。 3.(赛艇的)一艇的长度;一马的长度。 4.程度,范围。 5.【板球】球程;投至适当距离的球。 6.【语言学】音长。 7.一段,一节。 a dress length, a length of cloth 一段料。 a length of pipe [tubing] 一节管子。 The boat won by three lengths. 这只艇以三艇长之差得胜。 a (good) length ball 球程准确的球。 at arm's length 在手臂伸得到的地方,疏远 (keep sb. at arm's length 不与接近,敬而远之)。 at full length 1. 冗长地;充分地,详细地 (give all the facts at full length 提供详细的材料)。 2. 全身平伸地 (lie at full length 挺直身体躺着)。 at great length 冗长地,??唆唆地。 at length 1. 最后,终于,好容易才。 2. 充分地,详细地 (speak at great length 详细讲了好久)。 at some length 相当详尽地。 cannot see beyond the length of one's nose 鼠目寸光。 draw out to a great length 拖得很久,占去很长时间。 fall [measure] all one's length 直挺挺地倒下。 find [get, have, know] the length of sb.'s foot 了解某人的弱点。 go (to) all lengths [any length] = go to great lengths 什么事都做得出;不遗余力。 go (to) the length of (doing) 甚至于,不惜。 go the whole length of it. 彻底干;干到底。 length of (sb.'s) days [life] 某人的寿命。 measure one's (own) length 跌倒在地。 of some length 相当长。 over [through] the length and breadth of 到处,四面八方。 work at arm's length 在不利的条件下工作。
Corner detection based on accumulative chord length is invariant to rotation transformations , while the implicitly refining strategy of digital curves can improve computational precision and enhance the reliability of corner detection significantly 摘要提出基于曲线累加弦长来检测角点,可以使得检测结果具有旋转不变性,隐式精化曲线策略可以显著改善角点检测算法的计算精度,从而增强角点检测结果的可靠性。
Systemic measure scheme is designed on the basis of product line structure and every component of measuring system is specified . secondly , tube product shape imitating , rolling imitating of on - line tube product , measuring the chord length imitating with ccd and dimension measure arithmetic - circle least square estimation are finished . lastly , according to mentioned dimension measuring method , imitating operation and the result of imitating operation are emphatically analyzed 文章首先介绍了管状产品的生产线结构,根据生产线结构设计了系统检测方案,并详细说明了检测系统各部分的组成;其次对管状产品形状仿真、管状产品在生产线上滚动仿真、线阵ccd检测弦长仿真、尺寸检测算法? ?圆的最小二乘法进行了研究;最后重点对所提出的尺寸检测方法进行仿真计算并对仿真计算结果进行分析。
The mendable canny operator based on the linear interpolation is used to pick up the edge of the pointer , the pointers ’ instructive direction is gotten via the circumference chord length detection method proposed by the article , then according to the central angle of pointer relative to the benchmark and conjunctive relation , the right reading is received the database information management system realizes the consumers ’ water fee management 利用基于线性插值的canny算子提取边缘,通过本课题提出的圆周弦长灰度检测法得到指针的指示方向,进而依据指针相对于基准的圆心角和关联关系正确读数。数据库信息管理系统实现对用户用水信息的管理,主要功能分三大模块:一