performance n. 1.執(zhí)行,實(shí)行,履行;完成;實(shí)現(xiàn);償還。 2.行為,動作,行動;工作。 3.性能;特性。 4.功績;成績。 5.演奏;彈奏;演出;(馴獸等的)表演;把戲。 6.【物理學(xué)】演績。 a performance test 【機(jī)械工程】性能試驗(yàn)。 high performance 高度準(zhǔn)確,性能優(yōu)良。 an afternoon performance 午后的演出,日戲。 two performances a day 一天演兩場。 a fine [wretched] performance 成績好[壞]。 put a monkey through its performances 使猴子玩種種把戲。 performance in [of] horse-manship 馬戲;馬術(shù)表演。
Analyzing the performance curves of pumps and network in a variable flow pumping system, concluding the influence factors of energy saving and the optimal ranges of variable frequency drive ( vfd ) 摘要通過分析變頻水泵及管網(wǎng)系統(tǒng)在變工況下的特性曲線,得出影響水泵變頻節(jié)能效果的主要因素和變頻調(diào)速的適用范圍。
To tune up the frequency of power supply by the transducer in the system, this adjusting make the speed of electromotor and performance curve of pump change . at last, it make the status of a pump alter 在變頻調(diào)速恒壓供水系統(tǒng)中,單臺水泵工況的調(diào)節(jié)是通過變頻器來改變電源的頻率f來改變電機(jī)的轉(zhuǎn)速n,從而改變水泵性能曲線得以實(shí)現(xiàn)的。