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- Mathematic Model of Variable Speed Feedwater Pump Characteristic 变速给水泵特性的数学模型
- Variable speed feedwater pump 变速给水泵
- The drill has variable speed control. 这钻机有变速控制。
- The papers study the technology of variable speed drive in electric submergible pump. 本文主要论述了潜油电泵系统变频调速的应用技术。
- From those studies, we may know the variable speed drive in electric submergible pump is feasible and may run reliably. 根据以上的研究可知，潜油电泵系统采用变频调速是可行的，并且能可靠地运行。
- Accelerator Non-contact continuously variable speed system. 无极变速系统。
- Independent variable speed drives on telescoping section. 套车部件的自变数速度驱动器。
- Variable speed is almost essential if drilling is to be accurate. 如果钻孔要精确，则可变速度是必不可少的。
- The feedwater pump improvement project of steam turbine group200 MW in Power Plant has been implemented in1998. 某发电厂于1998年实施了200mw汽轮机组的给水泵改造工程,将电动给水泵改为小汽轮机拖动的汽动给水泵。
- The system consists of feedwater pump control, adjusting valve level control, safety and alarm devices. 该系统包括给水泵控制、调节阀阀位控制以及安全保护和报警。
- The feedwater pump improvement project of steam turbine group 200MW in Power Plant has been implemented in 1998. 摘要某发电厂于1998年实施了200MW汽轮机组的给水泵改造工程，将电动给水泵改为小汽轮机拖动的汽动给水泵。
- The running state and the allowed operating range of the feedwater pump can be determined with the model. 利用本模型,可确定给水泵真实运行状态和允许的工作范围。
- The papers simple discribe the basic structure of the variable speed drive system in electric submergible pump> principle of PWM inverter and the basic structure of IGBT. 对潜油电泵变频调速系统的基本结构、PWM逆变器原理以及IGBT的基本结构进行了简单介绍。
- This papers mainly study the influence of variable speed drive to the electric submergible pump system, for instance, long motor leads effect and common-mode voltage. 本文主要是分析了变频器对潜油电泵系统的影响，特别是长线传输问题及共模电压问题。
- Considering complicated variables of boiler feedwater pump system,its bond graph models are established based on bond graph theory. 锅炉给水泵是火电厂安全运行中一个比较重要的环节,建立其较精确的仿真模型从而研究其动态特性是非常重要的。
- Contolled by microcomputer , displayed by LED , stepless variable speed . 采用微电脑控制，LED显示，无级调速。
- Adopt multi-function digital frequency inverter, and stepless variable speed. 采用多功能数显变频器，无级变速；
- Variable Speed Buffing Wheel: Another luxury for the serious clayer. 多速打磨轮：软陶爱好者的另一样奢侈品。
- Coarse material is conveyed by a stream of air to variable speed whizzer-separator. 粗料由空气流输送到变速风力选粉机那里。
- The motor boiler feedwater pump(MBFP)of Unit 2 in Zhuhai Power Station encountered excessive shaft vibration(X/Y side)and even resultant trip-out during monthly periodical start-up test. 珠海发电厂2号机组电动给水泵在每月的定期试验起动过程中出现泵轴“振动高”和轴承“振动高高”的报警,甚至出现因振动大而导致电动给水泵跳闸。
