上电

Later, under the untypical parasternal four-chamber view which can thoroughly display the ostium of coronary sinus, the catheter was promoted further to the ostium of coronary venous sinus. Then the echocardiography technician adjusted the transducer of TTE in order to thoroughly confirm the position of the catheter tip. After confirming the position of catheter tip in the coronary venous sinus, the operator inserted the catheter into the coronary venous sinus for 3～4 mm farther. It was noted that if resistance was encountered by operator, the operation must be stopped, which was the same as x-ray fluroscopy as image guiding. TTE guiding His bundle elactric cahteter、high right atrium electric cahteter and right ventricular electric catheter in site: It is difficult using TTE singly since there are too many crossroads in inferior venous.

本研究结果显示，(1)单独应用TTE作为影像学引导进行冠状窦电极导管置放的成功率为93.8％～96.7％，并且应用TTE作为影像学引导放置专用冠状窦电极导管和普通电极导管的成功率和放置时间在统计学上无显著差异；(2)TTE作为影像学引导，除过度肥胖患者外，可完全替代X线引导进行冠状窦电极导管置放，包括鞘管和扩张管的放置、指引导丝在静脉而非动脉内的证实均可由TTE完成引导，且较X线C型臂有一定优越性；(3)TTE结合普通X线胃肠透视机作为影像学导引，可顺利完成心内电生理检查时导管的安全到位，而不需昂贵的X线C型臂，可将心内电生理检查扩大到广大的基层医院；(4)TTE较X线更易和更早期发现介入治疗的并发症如急性心包填塞等，对并发症的防治甚至挽救病人的生命至为重要；(5)动物实验研究表明，TEE可引导射频导管消融术时大头电极导管成功到位。

In order to study novel polyquinolines for their applications in the fields of electroluminescent devices and chemosensors, we synthesize polyquinolines containing phenylamine moiety for single-layer LEDs; moreover, we synthesize polyquinolines with different molecular structures to investigate their properties as fluorescent chemosensors.

本论文是以研究新型聚喹啉材料在电致发光和荧光传感器方面的应用为目的，将芳胺基元引入到聚喹啉主链上，以期使聚喹啉可用于单层电致发光器件中；同时通过合成不同分子结构的聚喹啉来考察其作为荧光传感器的性能和规律。

Hydrazine compounds including hydrazine, phenylhydrazine, semicarbazide and isoniazid were separated and determined by capillary electrophoresis with a poly modified microdisk carbon fiber electrode.

肼类化合物的毛细管区带电泳/聚谷氨酸修饰碳纤维微盘阵列电极安培检测以电聚合方法制备了聚谷氨酸修饰碳纤维微盘阵列电极，研究了肼、苯肼、氨基脲及异烟肼等肼类化合物在该电极上的电催化氧化。

Illustrates principle of plasma igniting technique by analyzing DLZ-200 type plasma portfire of 300MW generating unit in State Power of Shizuishan Electric Power Plant.

通过对国电石嘴山电厂300MW火电机组使用的DLZ-200型等离子点火装置分析，说明等离子点火技术的原理。通过国电石嘴山电厂锅炉等离子点火系统正常投运，探讨等离子技术在300MW机组上的应用。

But in practical operating, overvoltage caused by reignition of the vacuum switching device frequently appears, and it result in damage of the capacitor bank or the switchgear itself. Ensuring the switchgear against reignition and installing a protective device are two main approaches to avoid the phenomenon. In this paper, a study on overvoltage caused by reignition due to capacitor bank switching with the vacuum switching device and its preventive measures are carried out. The main work which has been done and researches are as follows: 1. The producing mechanism of overvoltage and its influence factor are analyzed. It is pointed out that single-phase reignition is the main reason for damage of the switchgear and two-phase reignition is the main reason for damage of the capacitor bank,so overvoltage of single-phase reignition and two-phase reignition are the emphases of prevention. 2. Analysis of the special working condition of the operating switch for capacitor bank is carried out. It indicates that the vacuum switching device is difficult to realize no-reignition under this operation condition, so it is more practical to adopt protection devices. 3. Analyses of protection effect of RC and MOA and their shortages are carried out. It shows that the two methods can only restrain effectively overvoltage caused by single-phase reignition, and they cannot protect the capacitor bank when reignition of two-phase occurs. 4. The operation principle of G-R damping device is analyzed and discussed emphatically.

本文针对真空开关投切电容器组时因重燃而产生的过电压及其防治措施进行了研究，所开展的主要工作和研究结果如下： 1、对过电压的产生机理及其影响因素进行了分析，指出单相重燃是导致开关设备损坏的主要原因，而两相重燃则是导致电容器组损坏的主要原因，因此单相重燃和两相重燃过电压是防护的重点； 2、对电容器组操作开关的特殊运行条件进行了分析，指出在这种运行条件真空开关难于实现不重燃，因此采用保护装置更具有现实意义； 3、对RC与MOA的保护效果和存在的不足进行了分析，指出这两种方法均只能有效抑制单相重燃过电压，而不能在发生两相重燃时保护电容器组； 4、重点对G-R阻尼装置的工作原理进行了分析和讨论，指出该装置接入后线路中将会出现两种频率的高频振荡，而电容器组上的过电压是由这两种振荡共同决定的； 5、根据对上述两种振荡的分析指出存在一个最佳电阻值使得过电压最低，并提出了电容器组电压和最佳电阻值的近似求解方法； 6、使用电气暂态分析软件MATLAB对G-R装置的保护效果进行了仿真计算，证实该装置确实可以有效抑制重燃时的电容器组过电压； 7、根据仿真与近似计算结果的偏差提出了近似计算的修正方法，经过修正后的过电压计算结果与仿真结果吻合较好； 8、对G-R装置中放电装置G与阻尼电阻R的要求进行了分析，指出采用编织电阻和真空间隙可能是最佳选择。

the and electrical imaging is based on ordinary to collect the high-density data and then to from a high-density and rich-content resistively section .

地电成像法，是在普通电法装置的基础上，进行高密度的数据采集，形成一个高密度的、内容丰富的视电阻率剖面。

The article introduces the structure and the technologic characteristics on the WSDB -Ⅱ horizontal Wet-ESP and The application of the first WSDB-Ⅱ horizontal Wet-ESP made in china on the flue gas from edge scarfer.

本文介绍了 WSDB-Ⅱ型卧式湿式电除尘器的结构和技术特点及首台国产 WSDB-Ⅱ型卧式湿式电除尘器在火焰清理机烟气治理上的应用情况，结果表明该类除尘器能够满足火焰清理机烟气排放的环保要求，完全可以替代同类进口设备。

The situation and effect of applying electrode holder without ring co llector to semiclosed ferroalloy electric furnace with low hood are introduced, its advantages and spread value are also affirmed.

介绍了无集电环电极把持器在半封闭矮烟罩铁合金电炉上的使用情况及效果，肯定了无集电环电极把持器的优点及推广价值。

METHODS: Nerve conduction velocity,wave amplitude and corresponding muscular needle electrode electromyogram of median nerve,ulnar nerve,interior and exterior cutaneous nerve in forearm,suprascapular nerve,axillary nerve,musculocutaneous nerve,radial nerve were tested by keypoint myoelectricity evoked potential equipment made in Denmark.

采用丹麦产keypoint肌电诱发电位仪检测正中神经、尺神经、前臂内、外侧皮神经、肩胛上神经、腋神经、肌皮神经、桡神经传导速度、波幅及相应肌肉针电极肌电图。

Nerve conduction velocity,wave amplitude and corresponding muscular needle electrode electromyogram of median nerve,ulnar nerve, interior and exterior cutaneous nerve in forearm, suprascapular nerve, axillary nerve,musculocutaneous nerve,radial nerve were tested by keypoint myoelectricity evoked potential equipment made in Denmark.

采用丹麦产keypoint肌电诱发电位仪检测正中神经、尺神经、前臂内、外侧皮神经、肩胛上神经、腋神经、肌皮神经、桡神经传导速度、波幅及相应肌肉针电极肌电图。

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。