查询词典 optical centre

The rotary connection can be carried out in free space and hi-direction transmission of optical signal can be performed. Through analyzing the design principle of the optical structure and optical path calculation, it is found that when the ratio between the focal lengths for two lens is 20~50 and off-axis distance is in the range of 4~10mm, the interference will not be occurred between two optical channels and signal transmission can be lasted.

在自由空间可以实现旋转连接并实现光信号的双向传输，通过分析该光学结构设计原理和光路计算，发现每组透镜中两个透镜焦距之比为20-50，离轴距离为4-10mm范围时，才能保证光通道之间不发生干扰且信号持续传输。

The main content includes as the follows:(1) An automatic neighbor discovery mechanism applicable to SDH network is proposed;(2) For the optical network with Optical Transfer Unit in WDM, a General Multi-protocol Label Switch-based automatic neighbor discovery mechanism is proposed and simulated;(3) Three automatic neighbor discovery mechanisms for the all-optical network with OEO module are proposed and comparatively simulated;(4) With the Loss of Light detecting, a novel automatic neighbor discovery mechanism in all-optical network without any OEO module is proposed.

主要工作包括：（1）提出了SDH网络的自动邻居发现机制；（2）提出了带波长转换器的光网络的自动邻居发现方案，并通过仿真对发现过程进行了跟踪和统计；（3）提出了三种带有光电转发模块的光网络的自动邻居发现策略，并做了仿真比较；（4）提出通过光丢失检测方式对不带OTU的光网络进行自动邻居发现的实现方法。

Optical fiber communication is transferring form point-to-point transmission to mesh network. Traditional optical-electronical-optical transformation limits the data rate and adds the cost. With reconfigurable optical add/drop multiplexer for signal switching and routing, the OEO transformation can be bypassed, reduceing equipment size and cost.

光纤通信由点到点传输向网格化发展，传统的光—电—光转换过程限制了通信速率并导致成本增加，采用可重构光分叉复用器进行光交换和光路由，可以省去光—电—光转换过程，缩小尺寸和降低成本。

The variety of building typologies includes the New Rimini Trade Fair Centre in Italy, the Schwerin Federal College and the Tempordrom Event Centre in Bertin, the Hamburg Elbkaihaus as well as the Bad Steben Casino, the Frankfurt "Wald" Stadium and the Art Kite Museum in Detmold, a Tourism Centre in China as well as the Fishermen's Chapel in Heiligenhafen on the Baltic Sea.

建筑的类型多种多样，包括意大利里米尼市新商品交易中心，什未林联邦学院，柏林Tempodrom 中心，汉堡的Elbkaihaus娱乐场，法兰克福的"城堡"露天体育场，多特蒙德的艺术风筝博物馆和中国的游览中心。

It was illuminated that the width of the centre bright fringe decreased along with the increasing width of the rectangular aperture when the effect of the aperture on the beam couldn't be ignored,however,the width of centre bright fringe step changed with increase of the size of the aperture when the effect could be ignorable,the width of the half maximum intensity of the centre bright fringe decreased along with the accretion of the width of the aperture and then it tends to a constant.

结果表明，当光阑对光束的衍射影响明显时，光束衍射场的中央亮条纹的宽度随着光阑边长的增大而减小；当光阑对光束的衍射影响极小时，中央亮条纹的宽度随着光阑边长的增加而阶跃变化，中央亮条纹强度的半最大值宽度随着光阑边长的增大而减小；当光阑对光束衍射影响极小时，中央亮条纹半最大值宽度趋近于一定值。

Under the round icon state, move the cursor to the position of centre of a circle (according to the position value of the cursor, or the cursor is reached and turned into ' X ' shape while appointing one), can't show, move the cursor at the same time, will reveal the present and round radius in the parameter window springing, will draw the corresponding round (when far away from the centre of a circle in cursoring on the screen, the radius becomes large; When the cursor is close to the centre of a circle, the radius is diminished).

有关机械方面的翻译，谁会，帮我翻译一句8.3.3.1圆输入 A ：标定圆在圆图标状态下，将光标移至圆心位置（根据光标位置值，或光标到达指定点时变成'X'形），不能放，同时移动光标，在弹出的参数窗内将显示当前圆的半径，屏幕上绘出对应的圆（当光标远离圆心时，半径变大；当光标靠近圆心时，半径变小）。

Academic developments range from a substantial expansion in Medicine to new postgraduate courses in Governance and Sustainable Development, from the Centre for Cancer Research and Cell Biology to the Sonic Arts Research Centre, and from the Seamus Heaney Centre for Poetry to novel approaches to "green technology".

学术从医学在治理和可持续发展新的研究生课程，从癌症研究和细胞生物学中心的声音艺术研究中心，并从谢默斯希尼诗歌中心的新办法"绿色技术"范围内发展。

MIFF 2010 – Moving Forward In New Designs and TechnologyNovember 2009 - The Malaysian International Furniture Fair 2010 (MIFF 2010) will take place from 2 – 6 March at three venues, the Putra World Trade Centre, Kuala Lumpur Convention Centre and the MATRADE Exhibition and Convention Centre.

MIFF 2010--在追求新设计和新工艺中前进2010马来西亚国际家具展（MIFF 2010）将于明年3月2日至6日，假首都吉隆坡三个场地，即：太子世界贸易中心、吉隆坡会展中心以及外贸促进局会展中心同时举行。

The Hotel Ibis Namur Centre is located in the city centre, close to the shopping centre, the theatre, the train station and the casino.

如果您在酒店取消政策规定的期间内取消预订，酒店将不收取取消费。您可在我们的相关条款中找到更多详情。

Other NIS campuses also locate in other busy centers of Auckland such as Panmure centre in Tamaki, New Lynn centre in the West of Auckland, Northcote in the North Auckland, and Otahuhu centre in the South of Auckland.

其他校区也坐落在其他繁华地带，如塔玛格校区在市东区商业中心，纽林校区在市西区商业中心，北岸校区在市北岸商业中心，而奥塔胡校区在南区商业中心。

We are in a good position to meet your requirements.

我们完全可以满足你方的需求。

We are all pervade d with a sense of disaster.

我们普遍有大祸降临的感觉。