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Biatrial and right ventricular triple chamber pacinmg is founded through implanting coronary sinus lead to pace left atrium on the base of conventional right atrial and right ventricular dual chamber pacing,which realizes the synchrony of electrical activities in both two atriums,remove interatrial conduction block and interatrial reentry,and prevent and treat atrial tachyarrhythmias induced by interatrial conduction block.

在常规右房、右室双腔起搏的基础上，植入冠状窦电极起搏左房，建立双房右室三心腔起搏系统，实现双房电活动的同步化，消除房间传导阻滞和房间折返，防治由房间传导阻滞引起的房性快速性心律失常。

On the foundation of the foregone work, the paper improved the structure of ozonizer and the power supply. Meanwhile, I have developed a device of detecting concentration of ozone quickly, then represented and analyzed the process and result of the experiment of the structure.

本文在前期工作的基础上，改进了放电室结构和放电激励电源，还研制了一种能快速检测臭氧浓度的实验装置，并对该种放电室的实验过程及结果进行了陈述和理论分析。

On Fifth Avenue were loungers--a few wealthy strollers, a gentleman in evening dress with his lady on his arm, some club-men passing from one smoking-room to another.

第五大道上有一些闲荡的人--几个有钱的人在散步，一个穿晚礼服的绅士挽着一位太太，几个俱乐部成员从一家吸烟室到另一家吸烟室去。

During the excavation of large underground tunnel s,the construction equipment dominant the construction procedure and excavation methods.

在钻爆法开挖大型地下洞室的过程中，施工机械的配置情况在一定程度上决定了地下洞室的施工程序和开挖方法。

According to several examples of underground tunnel excavation, the influences of construction machinery on the tunnel excavation method are analyzed.

文章摘要：在钻爆法开挖大型地下洞室的过程中，施工机械的配置情况在一定程度上决定了地下洞室的施工程序和开挖方法。

An apparatus for taking photographs,generally consisting of a lightproof enclosure having an aperture with a shutter ed lens through which the image of an object is focused and recorded on a photosensitive film or plate.

照相机一种用于拍摄照片的器械，一般由一遮光室组成，该遮光室带有一有层叠透镜的光圈，物体的影象通过它聚焦并被记录在一感光底片或感光板上

An apparatus for taking photographs, generally consisting of a lightproof enclosure having an aperture with a shuttered lens through which the image of an object is focused and recorded on a photosensitive film or plate.

照相机：一种用于拍摄照片的器械，一般由一遮光室组成，该遮光室带有一有层叠透镜的光圈，物体的影象通过它聚焦并被记录在一感光底片或感光板上英语词汇网 www.wbw.com.cn

It also have higher concentration ratio, besides, its application scope is very wide. With this kind of evaporating unit, solution with high viscosity can't be coked due to flowing evaporation. However, it is very difficult for most companies to accept it due to its very high price.

国际上处于领先的厂家有美国底特公司和丹麦的尼罗公司。2 装置介绍三效降膜真空蒸发器是由各效加热室和汽液分离器组成，加热室中有许多垂直沸腾管束，管长一般为直径的 1 0 0～ 2 0 0倍。

Stapleton University Library has a limited number of shared and individual locked carrels for faculty and graduate students who are working on research requiring library resources.

斯戴伯尔敦大学图书馆有一些数量有限的可上锁的合用学习室或独用学习室，供需要利用图书馆资料进行科研的教师和研究生之用。

Stapleton University Library has a limited number of shared and individual locked carrels for faculty and graduate students who are working on research requiring library resources.

斯黛普尔敦火学图书馆有一些数量有限的可上锁的合用学习室或独用学习室，供需要利用图书馆资料进行科研的教师和研究生之用。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。