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A Galilean telescope typically has a field of view of about 15-18 arc minutes.

甲伽利略望远镜通常有一个弧约15-18分钟，视场。

Music, literature, Ireland, Dublin, Paris, friendship, woman, prostitution, diet, the influence of gaslight or the light of arc and glowlamps on the growth of adjoining paraheliotropic trees, exposed corporation emergency dustbuckets, the Roman catholic church, ecclesiastical celibacy, the Irish nation, jesuit education, careers, the study of medicine, the past day, the maleficent influence of the presabbath, Stephen's collapse.

4音乐，文学，爱尔兰，都柏林，巴黎，友情，女人，卖淫，营养，煤气灯、弧光灯以及白炽灯的光线对附近那些避日性树木的成长所产生的影响，市政府临时所设不加盖的垃圾箱，罗马天主教堂，圣职者的独身生活，爱尔兰国民，耶稣会的教育，职业，学医，刚度过的这一天，安息日前一天的不祥气氛，斯蒂芬晕倒一事。

The voltage with the existence of gassing material, the arc voltage is higher.

试验结果表明，陶土灭弧室的介质恢复强度低，金属栅片灭弧室的介质恢复强度上升较快。

The knowledge of the machine design that concerning the arc wheel gear is the theories foundation of our design.

本设计的理论基础是有关圆弧齿轮的机械原理和机械设计的知识。

Driving system consists of gearwheel device, universal couplings and arc gear synchronous belt.

传动系统采用齿轮箱、万向轴联轴器、圆弧齿同步带相结合。

In existing technology, the nonnal way is adopting the four-bar linkage mechanism to imitate the arc or the linear movement. On the theoretical analysis, its movement precision can meet the requirement, while in the operation, because of the abrasion of bearings in gemel, which do much greater effect on movement than the former, its movement precision goes much beyond the theoretical value.

现有技术中一般是采用四连杆机构来仿弧线或直线运动，从理论上讲其运动精度是能够满足要求的，但在实际使用中，由于铰链点轴承的磨损（另外，装配时也预留了一定的轴承间隙），对运动轨迹产生的影响很大，其运动精度就大大超出理论值。

It is proved that arc coordinates of a directed curve cannot be used as ordinary coordinates or generalized coordinate s for the motion of an Appell-Hamel particle without a fixed orbit, but they can be used as quasi coordinates.

证明了弧长坐标 s在轨道未知的 Appell- Ham el质点运动中不能作为普通坐标或广义坐标，但可以作为准坐标，指出文献 [1]中引入弧长 s坐标的做法及"Appell- Ham el质点运动的轨迹是一般螺线"的结论是正确的，但其Appell- Ham el约束是完整约束及在该质点运动中 s坐标是广义坐标的观点是错误的。

In view of the fact that products cann't meet design demands when processing products with arc generatrix shape in centerless grinding, the design of copy rule was introduced,calculating formula was also presented.

针对用无心磨削的方法加工凸圆弧型外径素线的产品时存在的产品与设计不符的现象，重点论述了仿形尺的设计，给出了计算公式。

Some geometric data of ellipse in hyperbolic space are considered,such as set inclusion,arc length,geodesic curvature,curvature,area and total curvature .

在双曲空间中，考察椭圆的包含关系，对弧长元素、测地曲率、曲率、面积及全曲率等几何量做出细致考察。

After analyzing the curvature of the forming surface and the relativ emotion between the forming surface and the curved tooth surface during envelope tooth cutting,the authors work out the equations for calculating the induced normal curvature and geodesic deflection,the principal curvature and direction of the tooth surface of this kind of circular-arc gear .

通过对产形面曲率和包络切齿时产形面与齿曲面相对运动关系的分析，推导出双向圆弧齿轮齿面的诱导法曲率、诱导短程挠率和齿面的主曲率、主方向等计算公式。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。