泵

The datum offer reliable information to improve the pump performance and the type of vanes and volute.

通过对捕捉到的现象进行详细分析，为改善泵的性能，优化泵的设计提供了一些参考依据。

The self-suction capability and water-power performance are improved according to the test results.

新型泵腔结构形式比原泵腔结构形式在水力性能及自吸性能方面均有所提高。

In this dissertation, InGaAs/InGaAsP/InP MQW microdisk laser and its characterization were presented. Some conclusions are as following: the characteristics of lasing threshold was discussed by using rate equation. The dependent relations between threshold and cavity volume, spontaneous emission coupling efficiency β were investigated. The whispering gallery mode and spontaneous emission in a microdisk geometry were then studied. Almost all spontaneous emission was coupled into the lowest order TE mode when the normalized thickness of photonics well was between 0.15 and 0.5. The design principle and device process of InGaAs/InGaAsP/InP MQW microdisk laser were presented. The microdisk lasers with the diameter of 8μm, 4. 5μm and 2μm were succesfully fabricated by using etching techniques. The pulse lasing thresholds for the microdisk with the diameter of 8μm and 4. 5μm were 170μW and 15μW, a record results compared with the published in the literature. The cw lasing threshold for a 2-μm-diameter microdisk was only a few μW. We haven't found similar report up to now. To solve the problem of directional output in a microdisk laser, the power coupling efficiency in a double disk geometry was investigated with the theory of waveguide mode couple. A new structure of electrically pumped microdisk laser with output waveguide was designed, making a foundation for the practical use of microdisk laser.

本文主要研究InGaAs/InGaAsP/InP多量子阱半导体碟型激光器的研制和特性表征，并取得如下结果：利用速率方程理论讨论了激光器激射阈值的特性，分析了阈值与腔体积和自发发射耦合系数β之间的关系；讨论了微碟光子阱结构中的自发发射特性和微碟中WGM模式特性；光子阱结构在其归一化厚度在0.15-0.5之间时，几乎全部自发发射进入到最低阶TE模式中；研究了InGaAs/InGaAsP/InP多量子阱微碟激光器的结构设计原理和器件的制备工艺；利用刻蚀方法成功制备出直径分别为8μm、4.5μm、2μm的碟型微腔激光器；直径8μm和4.5μm的微碟脉冲光泵浦激射阈值分别为170μW、15μW，是目前所见文献报导中比较低的；直径2μm的微碟连续光泵浦激射阈值仅几μW，目前尚未见到达到类似结果的研究报导；为解决微碟激光器激射光定向引出的问题，通过波导耦合模理论分析了双层碟之间功率耦合效率；据此设计了新型带耦合输出波导的电泵浦微腔激光器，为进一步研制可实用的电泵浦微腔激光器打下基础。

An optical source usedto pump XeF laser is introduced.The discharge breakdown property,the current as afunction of charge voltage in different gas,the discharge homogeneity and the effect ofdifferent gas composition on the discharge radiation have been experimentally studied.

介绍了一种用以泵浦XeF激光的横向表面放电辐射源，比较详细地研究了这种泵浦源的放电击穿特性、放电电流与充电电压及不同气体介质的关系、表面放电均匀性以及不同气体成分对表面放电辐射特性的影响。

Is located in the Qingpu District of Shanghai Huqingping 2599, Panda high-tech industrial park, is set research and development, manufacturing, sales automatic Jiaoyun sewage pumps, Sets, air compressor, antiscale Centrifugal pumps, constant pressure fire pump, no suction pipe network frequency automatic pressurized water supply equipment, pipeline cleaning equipment, frequency conversion kits water supply equipment, control cabinet, pressure complete sets of equipment in a body specialized company.

上海熊猫机械集团有限公司坐落于上海市青浦区沪青平公路2599号熊猫高科技工业园区内，是集研究、开发、制造、销售自动搅匀排污泵、高压清洗机、空压机、防垢离心泵、恒压消防泵、变频无负压管网自动增压给水设备、管道清理设备、变频成套供水设备、控制柜、气压成套设备于一体的专业集团公司。

QS3NB-500Single Pump Group makes use of structure of register,that is to say,diesed and the redveing speed system fixed on a base.The pump is alone fixed another base.The whole device realizes steel function reconneition by shell and dowel,which is vonvenient to take aport and transport.

QS3NB-500单机泵组采用了分体式挂装结构，即柴油机及减速系统安装在一个底座上，泵单独装在另一个底座上，整个装置通过炮弹销子实现钢性连接，便于拆装，运输方便，是油田钻井、修井和多井注水的首选产品。

The fine screen installation shall incorporate a radius edge at the pump bellmouth for smooth entry into the pump inlet.

好的荧屏安装将合并一在泵 bellmouth 的半径边缘为平滑的进入进入泵插入物之内。

In other types of rotary pumps, the liquid is forced to travel circumferentially, however the screw pump has an axial flow pattern and low internal velocities.

在其他类型的旋转泵，液体被迫旅游圆周，但螺杆泵有轴向流型和低内部速度。

This paper introduces an approach that the CoCreate OneSpace Modeling software is used to precisely construct the model of the 135 three screw pump .

介绍了一种在CoCreate OneSpace Modeling设计环境下精确创建135型三螺杆泵实体模型的方法，在建模过程中通过运用动态模型技术，从而缩短了三螺杆泵的研发周期，提高了产品的精确度。

C pump rotor can be used to transfer high viscosity material, so also known as colloidal pump.

c 转子泵可用于输送粘度很高的物质，所以又称胶体泵。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。