查询词典 arc-weld

The results show that the zero speed point is located on the arc between two absolute speed zero points of rotation axes, and the necessity of relative speed zero point is demonstrated, From the location of speed zero point, some useful conclusions can be drawn.

对速度零点的位置进行了分析，得出了如下结论：对于一定形状的工件，通过调整两轴的转速比以及两轴夹角参数，可以将速度零点置于工件之外，从而避免速度零点对研磨的不利影响。

With the help of computer program, zero speed point was searched. The results show that the zero speed point is located on the arc between two absolute speed zero points of rotation axes, and the necessity of relative speed zero point is demonstrated.

利用程序对相对速度零点的位置进行搜索，发现速度零点处于两轴绝对速度零点之间的圆弧上，从而证明了相对速度零点存在的必然性。

It is proved that the space which contains a free arc does not admit any chaotic group action.

第一章，介绍了离散群作用动力系统的一些背景及本文的主要结论。

Also using the exterior expression for the Graf′s addition theorem, the exact solution for scattering of plane SH waves by circular arc alluvial valley is presented in the paper. From the numerical results the complex effect of the depth-to-width ratio of the alluvial valley on the surface ground motion is found.

利用Graf加法公式的外域型表达，本文还给出了任意圆弧型沉积盆地出平面散射的精确级数解答，提供了大量数值结果并指出了盆地深宽比对地面运动的复杂影响作用。

Three intersection functions,such as adjacent node set,node-arc angle set and connected node set,were presented,and based on the shortest path method proposed by Dijkstra,a road guide sign model was built by using the intersection functions.

结合路网的拓扑结构，定义了用于确定指路标志的状态函数集，给出了3个描述路网拓扑特征的交叉口函数：邻近结点集、结点-弧段夹角集和连通结点集，基于Dijkstra最短路径的思想，运用交叉口函数建立了城镇指路标志的标识模型：以待标识城镇为中心，在城镇的影响区域内，通过向外搜索交叉口邻近结点集来确定指路标志的设置，并使每个结点上标识的路径都是最优的。

Some important properties of affine geometry are analyzed firstly. Then two new conceptions called Extended Centroid and Affine Region Cutting are introduced.

大量实验证明，EC-ARC方法具有计算速度快，所提取的特征量稳定性高等特点，特征量对噪声干扰、照度变化和部分遮挡等具有良好的适应性。

The observers did not see the paladin move, only the bright afterimage as the crystal sword traced a lightning-like arc through the fiend.

两个观察者都没有看清那个圣骑士的动作，只看到了水晶剑划出的穿透那个恶魔的闪电般的美丽弧线。

The major characteristics of their agro - vocational education arc as follows

他们农中的升学机会也是比较多的。

Just two feet away from him, Denise waves her arm in the air from side to side in a big arc.

离校长不过才两步之遥，丹妮丝却将自己的手臂在半空中挥舞成了一个大大的圆弧。

Here tourists can appreciate a wide variety of replicas of famous sights, such as the Arc of Triumph, the Eiffel Tower, the Glass Pyramid of Louvre, Versailles Palace and Notre Dame de Paris in France; London's Tower Bridge and Buckingham Palace in Britain; the Leaning Tower of Pisa, the Colosseum, Venice and St. Mark Square in Italy; the Alcazar Castle in Spain; the Cologne Cathedral in German; the idyllic sight of windmills and tulips of Holland; the Acropolis of Athens in Greece; the wall and clock towers of Kremlim in Russia; the Taj Mahal in India, the Grand Palace in Thailand; the Angkor Wat in Cambodia; Shwedagon Pagota in Burma; the Merlion in Singapore, the pyramids of Giza and the Abu Simbel Temple in Egypt; the Grand Canyon and the Stature of Liberty in the United States, Sydney Opera House in Australia; the Olmec Heads in Mexico; the statues of Easter Island in Chile; the Linear Drawings at Nasca in Peru; and the Great Wall and the Palace Museum in China, etc.

游客可以在这里观赏法国的凯旋门、埃菲尔铁塔、卢浮宫玻璃金字塔、凡尔赛宫和巴黎圣母院；英国伦敦的塔桥和白金汉宫；意大利的比萨斜塔、罗马大斗兽场、威尼斯水城和圣马克广场；西班牙的阿卡沙堡；德国的科隆大教堂；荷兰的风车和郁金香田园风光；希腊的雅典卫城；俄罗斯的克里姆林宫墙及钟楼；印度的泰姬陵、泰国的泰王宫；柬埔寨的吴哥窟；缅甸的仰光大金塔、新加坡的狮头鱼身像；埃及的吉萨金字塔群和阿布辛伯勒神庙；美国的大峡谷和自由女神像；澳大利亚的悉尼歌剧院；墨西哥的巨石头像；智利的复活节岛巨人石像；秘鲁的那斯卡线画；中国的长城和故宫等景物复制品。

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。