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負(f锟斤拷)锟斤拷锟斤拷B锟斤拷

锟斤拷锟轿碉拷锟絝锟斤拷锟斤拷負(f锟斤拷)锟斤拷锟斤拷锟角碉拷锟节筹拷锟斤拷锟斤拷锟斤拷锟斤拷锟絝锟斤拷一锟斤拷锟斤拷鈮猴拷锟斤拷臍锟斤拷w锟斤拷锟斤拷锟斤拷B(t锟斤拷i)锟斤拷負(f锟斤拷)锟斤拷锟斤拷锟斤拷锟矫非筹拷锟秸憋拷锟斤拷锟剿傦拷锟斤拷锟斤拷使某锟斤拷锟街匡拷锟絞锟斤拷锟紽(xi锟斤拷n)負(f锟斤拷)锟斤拷锟斤拷B(t锟斤拷i)锟斤拷锟斤拷锟斤拷锟斤拷锟矫無處锟斤拷锟节的达拷鈮猴拷锟斤拷覀锟叫э拷锟�锟斤拷锟斤拷锟斤拷锟斤拷锟剿傦拷锟斤拷锟斤拷锟絩锟斤拷锟斤拷(d锟斤拷ng)锟斤拷處锟节擴锟斤拷锟斤拷B(t锟斤拷i)锟絩锟斤拷锟紽(xi锟斤拷n)負(f锟斤拷)锟斤拷锟斤拷锟节肺的冿拷(n锟斤拷i)锟斤拷锟轿筹拷锟剿夛拷锟斤拷锟斤拷锟斤拷锟絩锟秸氾拷捅锟斤拷锟斤拷锟轿冿拷(n锟斤拷i)锟斤拷
通锟斤拷锟节癸拷锟絀(y锟斤拷)锟较ｏ拷锟截別锟斤拷微锟酵泵ｏ拷锟斤拷微锟斤拷锟斤拷毡锟�锟斤拷微锟酵氾拷茫锟轿�锟酵氾拷锟絯锟缴樣憋拷锟斤拷微锟酵氾拷锟絯循锟絟(hu锟斤拷n)锟矫ｏ拷微锟酵筹拷锟矫ｏ拷锟絰锟斤拷锟叫筹拷要锟芥及锟斤拷锟紷锟斤拷锟斤拷锟斤拷锟斤拷 锟斤拷锟界：锟斤拷一锟絅微锟斤拷锟斤拷毡锟�锟斤拷锟斤拷锟斤拷锟节筹拷锟斤拷锟轿筹拷0.04MPA锟斤拷負(f锟斤拷)锟斤拷锟斤拷锟斤拷思锟斤拷锟杰岋拷锟斤拷锟絔锟斤拷锟斤拷锟斤拷(n锟斤拷i)锟侥氾拷锟絯锟斤拷锟斤拷40%锟斤拷剩锟斤拷60%锟斤拷锟絚锟斤拷锟斤拷鈮猴拷膲锟斤拷锟斤拷锟斤拷100*(1-0.6)=40KPA(锟斤拷锟斤拷锟斤拷負(f锟斤拷)锟斤拷值锟介：-40Kpa)锟斤拷锟节筹拷锟矫碉拷锟斤拷毡锟斤拷锟斤拷@示锟酵烇拷-0.04Mpa锟斤拷锟斤拷锟絆(sh锟斤拷)锟斤拷(d锟斤拷ng)?sh锟斤拷)卮锟解壓锟�?.1Mpa锟斤拷锟斤拷

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