In order to solve the matching problem of 3-D coupler-curves, the substructures of coupler-curves were classified into different equivalence classes based on writhing numbers,which is borrowed from knot theory and can describe characters of spatial curves to some extent.
为了解决空间连杆曲线与预定轨迹的匹配问题,利用纽结理论中反映空间曲线几何形态的绞拧数作为指标,将曲线各子段对分成若干个等价类,对每个等价类中各曲线子段对进行刚体变换而近似匹配,通过对刚体变换进行聚类分析得到曲线的匹配关系,从而得到两者的相似度。
Firstly we give necessary and sufficient conditions that element in S_n has right inverse or left inverse and that element in S_n has unique right inverse.
首先给出了Sn中元有随机右逆的充要条件以及元有唯一随机右逆的充要条件,其次,给出了Sn中元有随机左逆的充要条件。
And then, this paper presents an algorithm of computing the left inverse or right inverse for these special rectangle matrices.
工程中的计算问题大部分都可转化成求解线性方程组的问题，而这些线性方程组有的时候是不相容的，本文研究以一些特殊的长方矩阵为系数阵的不相容方程组——Vandermonde方程组，Toeplitz方程组，Loewner方程组等的极小范数最小二乘解的快速算法，以及求这些特殊矩阵的左逆及右逆的快速算法。
One that wrings, especially a device in which laundry is pressed between rollers to extract water.
绞拧机，压汁机绞拧的物体，尤指在滚筒之间被施力压水来洗衣物的设备
electric washer with automatic timer and wringer
配自动计时器及绞拧器的电动洗衣机
A clothes wringer.
绞衣机用于绞衣的机器
drum for capstans, winches or hoists
绞盘、绞画或升降机卷筒
Research on the Screwing Technology & Design of the Screwing Control System;
螺纹拧紧技术研究及拧紧机控制系统设计
The machine is mainly used for stranding steel core AL stranding wire, nude copper, nude AL stranding wire or insulated wire core stranding.
本机主要供绞制钢芯铝绞线,裸铜、裸铝绞线或作绝缘线芯绞合之用。
Winches for forestry--Technical requirements
GB/T15103-1994绞盘机技术条件
Design and Calculation of ZJ40/2250LDB Rig Drawworks
ZJ40/2250LDB钻机绞车设计计算
A method of execution formerly practiced in Spain, in which a tightened iron collar is used to strangle or break the neck of a condemned person.
绞刑最先在西班牙出现的一种绞死人的方式，使用一种拧紧的铁环去使罪犯窒息或将其脖子勒断
While he fastened on the new one, he turned his head toward her and grinned.
他在拧紧新相机时回过头来向她笑着说:
The application of fastening technology in cylinder head assembly
拧紧技术在发动机汽缸盖装配中的应用
To raise with a windlass.
用绞盘机（或起锚机等）吊起，拉起
Hussong type dyeing machine
胡桑式染色机（悬挂式绞纱染色机，染色时染液通过绞纱倒顺循环）
To move with or as if with a winch.
用绞车拉，用起货机吊用或似乎用绞车或起货机移动
Insert the needle into the needle bar until it will go no further. Securely tighten the needle clamping screw.
把机针深深地插进孔的深处，然后拧紧固定机针固定螺丝。
Loosen needle clamping screw 2, and hold needle 1 so that long groove A in needle 1 faces exactly to the left.
拧松机针固定螺丝2，把机针1的长槽A转到横向朝左。
The design of bolt-screwing device for installing a robot on the lighting rod on air bracket grounding wire
高架地线上避雷针安装机器人螺栓拧紧机构的设计
Give the towels another wring.
把毛巾再拧一拧吧.