Taking two commonly used primary and secondary chilled water pump systems as examples,analyses pump running conditions,puts forward the three concepts of possible running zone,working point and working zone.
以两种常见的空调冷水一、二次泵系统为例,分析了水泵运行工况,提出了可能运行区、工作点及工作区的概念;认为不能仅依靠特性曲线分析水泵运行情况,在末端变流量系统中应考虑自控系统对末端侧管路系统的影响,以及冷水机组与水泵联锁运行对冷源侧管路的影响;建议完善水泵设置和自控系统,以保证水泵在工作点或工作区正常运行,采取压差、限流等流量控制措施使设备与系统稳定、节能运行。
The affects on every parallel connection pump working point are theory analyzed,which are caused by using the simply "horizontal addition "to make sure of the differences of both branch pipe length and every pump intake level;A certain method to confirm every pump real working point after considering these factors of influence was pointed out.
针对简单的采用“横加法”来确定因分支管路长度以及各水泵入口点高差的不同,给各并联水泵运行工作点带来的影响进行了理论分析;同时给出了在考虑这些影响因素后各泵真实工作点的确定方法,为并联系统中水泵的合理选择和正确操作提供可参考的依据。
Three practical methods,which are quite different in instruments and steps,are suggested to monitor the displacement of a working point.
基于一般测量原理 ,提出了监测工作点位移的小角法、距离后方交会法和方向后方交会法 ,详细推导了其计算公式和顾及工作点位移的监测点位移计算公式 ,分析了其适用特点。
Takes the meter in speed control system for example,determines the operating point of the meter in speed control system by analyzing the characters of the meter in speed control system and combining the character of the overflow value and the throttling value.
以进油路节流调速回路为例,通过对进油路节流调速系统的特性进行分析,将溢流阀与节流阀的特性进行组合,确定了进油路节流调速系统的工作点;并通过组合特性曲线分析了负载F、节流阀通流面积a(x)、溢流阀初始压力p0、溢流阀特性变化对工作点的影响。
Basic operating principle of the meter-in control system and interrelated character about circuit is discussed,on this basis,the impact of load pressure,flow area of throttling valve,open pressure of pressure relief valve and the change of rated working pressure on operating points,power characteristic and efficiency are discussed,and relative conclusions are obtained.
讨论了进油路节流调速系统的基本工作原理和回路相关的特性,在此基础上,讨论了负载压力、节流阀通流面积、溢流阀开启压力和额定工作压力的变化对系统工作点、功率特性和效率的影响,并得出有关结论,可供进一步深入研究作参考。
This paper analyzes the stability of DC circuits′ operating points, shows that if a circuit possesses m structurally stable operating points, then (m-1)/2 of these operating points must be unstable.
对直流电路工作点的稳定性进行了分析 ,说明如果一个电路有 m个在结构上稳定的工作点 ,其中 ( m-1 ) / 2个一定是不稳定的 。
The interferometer demodulation method based on feedback control work point has been designed.
为解决干涉型光纤传感器的相位漂移问题,通过对双光束光纤干涉仪输出光强信号的理论分析和数学推导,阐述了信号各种成份的特点和作用,设计出基于反馈控制稳定工作点的干涉仪解调方案。
Influences of phase modulator non-linearities on measurement of work point and signal demodulation are analyzed theoretically .
从理论上给出了二倍频非线性相位调制情况下开环光纤陀螺输出信号的一、二、四次谐波表达式 ,分析了相位调制非线性对陀螺工作点测量与信号解调的影响 ,实验验证了相关结果。
According to the feature of tube hydropower loss in paralleling pump, a new defining method of Paralleling work point is deducted.
论述系并联的管路水力损失特征，依此，推求并联工作点确定的新方法：将泵站的压力箱、涵管等出水建筑物视为并联结构。
Application research of tune measurement system in Hefei light source;
工作点测量系统在合肥光源的应用研究(英文)
Tune measurement system for HLS;
合肥光源的工作点测量系统
By comparison of three operation status, proposes how to select and adjust the operation point in the present paper, which is significant to the stability of electromagnetic vibration feeder.
对三种工作状态进行了比较分析,提出了工作点的选择和调整方法,对电磁振动给料器稳定工作具有重要意义。
graphic method of pump operating point
水泵工作点的图解法
He works from nine o' clock until five o' clock.
他从九点工作到五点。
We quit work at five.
我们在五点停止工作。
He worked till five.
他一直工作到五点。
I start work at nine in the morning.
我上午九点开始工作。
Diesel Engine Operating Features
柴油发动机工作特点
What time do you begin/start work in the morning?
你上午几点钟开始工作?
The job is sort of classified.
我这工作有点保密。
The first thing is to get some work to do.
首先是找点工作做。
I worked until half past five each day.
我每天工作到5 点半。
Working Group on Reference Points for Fisheries Management
渔业管理参考点工作组
I usually finish work by five o'clock.
我一般五点钟做完工作。
I have a job interview at one o'clock.
我一点钟有工作面试。
Part II. Key Points for the Work in 2002
第二部分 2002年工作要点
He has an unblemished employment record.
他的 (工作) 履历毫无污点。
Experience for Training and Improving Professional Quality of Pharmacists by Drug Stocktaking
做好药品清点工作 打造高效工作团队
Several Thinkings on Acceptance and Recording of the Project after its Completion;
对工程竣工验收备案工作的几点思考
I worked from 7 to 11 last night.
昨晚我从七点工作到十五点。