两三个

The forward kinematics is analyzed by choosing one of the mechanisms which have one, two,three or zero angle constraint.Wherein,3-CCC is a new parallel mechanism which has three angle constraints and three distance constraints, Calay\'s formular and direction cosine matrix are used to describe the rotation matrix respectively.By setting Dixon\'s and Sylvester\'s resultant with the three angle constraint equations respectively and using parameters replacement to deal with the distance constraint equations,the 64 order input-output equation of the forward kinematics is obtained under both of the methods.Numerical example confirms these theretical results and the motion simulation is shown in VC++ by integrating OpenGL.

3对高小山提出的广义并联机构进行了研究，以其中具有角度约束的并联机构进行了分析，选取具有一个、两个、三个和零个角度约束类型中各一个机构进行了运动学正解求解，其中3-CCC是一种全部由圆柱副构成的具有三个线线角度和三个距离约束的新型并联机构，文中分别用Calay公式和方向余弦两种旋转矩阵建模方法对其位置正解进行了分析，通过对三个角度约束方程分别构造Dixon结式和Sylvester结式，以及对三个距离约束方程进行变量代换分别导出了位置正解输入输(来源：4040ABC论文网www.abclunwen.com)出方程，得出64组位置正解，并使用数值算例验证了其全部根。

The first and second syllables constitute a disyllable group, and the first syllable changes according to the initial syllable of the disyllable group.

即第一、二两个音节构成一个两字组，第一个音节按两字组的前字变；第二、三两个音节构成一个两字组，第二个音节按两字组的前字变，第三个音节按两字组的后字变。

Democrats , in general, are no great shakes at confronting terrorism.

我说我三个月攻克了英语，很多学习者是不相信的，以为这是商业炒作，我对此不表示任何看法，别人怎么做是别人的事，我只会做好自己，人们的眼睛是雪亮的，只要看完我写的全部博文，就知道我的水平了，我在当兵时见到李阳老师后，开始疯狂的自学几个月，每天只睡两个小时，结果患了很多疾病，于是就停止了学习，开始四处求医，直到05年，身体才有所好转，于是到大连外国语学院读了自考，这一年也没有怎么学，花了两万多块，结果我上了半年课都不到，因为我退学了，因为课程表中没有外教的课程，实在太枯燥了，我就退学了，怕父母伤心，我就躲在宿舍里近半年多，那是迷上了韩国服饰，因为大连和韩国直接进行贸易交流，很多服装都是原版引进，我实在很动心，我想如果回家开个韩国服装店，一定很火，于是，就彻底弃学从商了，可是由于没有经验，做了几年买卖，一直亏损，07年开了个疯狂英语口语班，用我在部队学习过和背过的疯狂英语口语，传授了一些小学生，还有一些高中生，那时只能传授点日常口语，因为我对语法一窍不通，可是后来，连一个月30元都招收不到新学员了，因为我的能力实在太差了，口语能力皮毛，语法一窍不通，而我的家乡又是个特别重视考试成绩的，所以，我只有开始深造了，直到08年，才重新捡起英语，重新开始自学，因为我发现，只有依靠头脑赚钱，可以无本取利，于是我把在大连买过的英语资料，重新拿出来，开始研究并实践了三个月，终于悟出了三多英语，我说我三个月攻克了英语，是从08年我正式开始自学算起的，而不是从我认识李阳老师开始的，如果从那时算的话，加在一起也就一年的时间吧。

In 1940, a French infantry division was made up of three infantry regiments (each one having a headquarters company, a weapons company and three battalions), one cavalry unit tasked with reconnaissance, one anti-tank company (12 25mm anti-tank guns), one light field artillery regiment with three groups of 12 75mm guns each (plus an anti-tank and anti-aircraft company to protect the field guns from enemy tanks and aircraft), one heavy field artillery regiment (two groups of 12 155mm howitzers each), two engineer companies, two signals companies, two transport companies, one ammunition company, one medical group and divisional services.

在1940年，一个法军步兵师由三个步兵团(每个都有一个司令部，一个武器连和三个营)，一个负责侦察的骑兵部队，一个反坦克连(12架25mm反坦克炮)，一个轻型野战炮团配备有12架75mm炮三组(再加上一个反坦克防空连保护野战炮不受敌人坦克和飞机的攻击)，一个重型野战炮团(12架155mm榴弹炮两组)，两个工兵连，两个通信连，两个运输连，一个军火连，一个医疗大队和师后勤部门。

It is a top resort for honeymoon couples, and also boasts one, two and three bedroom oceanfront villas and good value sunny breakfast packages.

这是一个顶蜜月度假为夫妻，并具有一、两三个卧室，森林别墅及阳光早餐包好价。

There are two or three kindergartens in the area to choose from.

本地区有两三个幼儿园可供选择。

SCIENTIFIC PUBLISHING: A Scientist's Nightmare: Software Problem Leads to Five Retractions - Due to an error caused by a homemade data-analysis program, on page 1875, Geoffrey Chang and his colleagues retract three Science papers and report that two papers in other journals also contain erroneous structures.

科学出版：科学家的恶梦：软件问题导致五名回缩由于错误造成了国产数据分析程序，1875页、班昌和他的同事们认为，收回两三个科学论文和报告论文期刊等也含有结构错误。

Sincere believers were scandalised at the spectacle of two or three rival Popes, each claiming to be the successor of St. Peter, and hurling at his opponents and their supporters the severest censures of the Church.

两三个敌对教皇的同时执政让真诚的信徒们惊异不已，教皇们都自称是圣彼得的继承人，诋毁他们的对手及其追随者为教会最大的罪人。

I think of a certain Bible school having to change its location very two or three months.

我想到一个圣经学校：每隔两三个月就要转移上课地点。

The Dagda, with two or three of his warriors, had followed hard on their track.

此时，达格达带着他的两三个士兵，正拼命的追赶。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。