6 ȵż¶ȼгõ¶Ȳ ¶ȱ0ȷ
¶ УDZ㷨 ŷ ȵż ֡ 7Զƽȵʱ ӣӵߵĵ涨Ϊ 2x2.5_______________
ۺ⣨62֣
115֣ȽϵӵλƽڲԭͽṹЩͬ㡣
ԭͬ㣺ûλõı仯ӳ¶ȵĴС ṹͬ㣺 Ŵͬ ṹIJͬ㣺Ԫ· ԭIJͬ㣺
215֣ȵżʱʹòߵĿʲôܷ¶Ȳ粻Ӧδ
𣺢ʹòߵĿǽȵż˴¶ȽϸߡϴĵطƵ¶Ƚϵ͡ȶĵط
ֻʹòܴﵽ¶ȲĿģʹá
۾巽£
ȵżõ¶ȲУʽ㷨ԡDZе͵Ų
312֣ϵͳķͼֱ˵··á
ͼΪϵͳķͼ·ǿ˷ڸĸţʹرȶٶӰ죻·Ҫ˷ĸţ֤رȶ
420֣Ҫû¶t(ϵͳ)Ϊ֤
жϡ ָɿϵͳʱıرݱҪʲô 4
֣ ͼϻͼȷִͣ 5֣ ѡ÷ 3֣ ϵͳͼ 4֣
˵ϵͳ˷ŵḶ́¶tߣƶ̣
4֣
𣺢 ɿϵͳʱıر¶ȣݱҪ
ǣϵ¶ȣ¶Ⱥȡ ͼͼִΪʽ
Ϊ÷ ϵͳͼͼ
ϵͳ˷ŵḶ́ʹ¶tߣڸƫźӣӴ¶½ظ
⣨10֣
ͼҺλѹ̡ΧǨ(10) ֪H=010m =35kg/m3 g10m/s2
𣺦P=P+-P-=Hg=3500H Pa
ѹ
̣35000 (Pa)Χ035000 (Pa)Ǩ0 (Pa)
DZԶγ̲ һ ⣨32֣
1ƹɵIJ ʱ ʱ
2ϵͳṹ·ֱΪ · ·ֱΪ һ ڲ
3ɹѹ __λ___뱻ѹƽġ 4ܱӰǣ__________________Բ____˵ּɣ
5 ѹʽ___ԭвġ
6ʽҺλҺλʱճȵ__Һλ__Ӱ졣
7ֶȺΪS͵ȵżKȵżIJȵƻ ߵͺȷӷȵƻ
8ʽѹIJȽ ѹ ת λ Ȼٱ
__ݱ仯_Ϊתֵ롣
ۺ⣨58֣
110֣ȿϵͳһϵͳͬЩʵ־ȿƣ 𣺢پȿϵͳһϵͳͬ㣺ṹͬͬ㣺Ŀĺص㲻ͬĿΪ˽ǰĹìܣʹܻ˺ЭصʹϵıķΧڻر仯 ھȿƵʵֿԴ21ڹϲPPIDڣ2ϱȴСұȣͻʱ䣩ϴ
28֣ӱ֤ĽǶȣƷӦļ棿ļʽ
𣺢ٿƷӦǣھѡʽѡѡ
4ʽ1 ֱ2 Ȱٷֱ3 쿪 4
310֣ƫǽԾźţͼ֪PPIӦߡ
֪Ȧ=200%֪Ȧ=100%ʱTi=2