ȫa(chn)ڶʮlҎ(gu)ΣI(y)ĘI(y)ˆT(yng)(dng)ܰȫa(chn)Ӗ(xn)ձİȫa(chn)֪R(sh)߰ȫa(chn)(qing)¹A(y)͑(yng)̎(j)a(chn)(jng)IλȫӖ(xn)Ҏ(gu)ԭҰȫa(chn)O(jin)3̖(ho)ʮlҎ(gu)a(chn)(jng)IλύďĘI(y)ˆTǰȫӖ(xn)r(sh)g24W(xu)r(sh)úVúVɽΣU(xin)W(xu)Ʒұa(chn)(jng)IλύďĘI(y)ˆTȫӖ(xn)r(sh)g72W(xu)r(sh)ÿӖ(xn)ĕr(sh)g20W(xu)r(sh)
(bo)ԃ18206863120̖ͬ(ho)
ΣU(xin)؛Ʒ̖(ho)GB6944Ҏ(gu)ΣU(xin)؛ָбըȼȾgԵΣU(xin)\(yn)ݔ(ch)a(chn)(jng)Iʹú̎ؔ(ci)a(chn)ph(hun)ȾҪeo(h)|(zh)Ʒ
һCe
һΣU(xin)W(xu)Ʒ(jng)IλҪؓ(f)؟(z)
ΣU(xin)W(xu)Ʒ(jng)Iλȫa(chn)ˆT
CҪ
һӖ(xn)δȡáȫa(chn)֪R(sh)˺ϸCΣU(xin)W(xu)Ʒa(chn)(jng)IλҪؓ(f)؟(z)˺ͰȫˆT
QCȡáȫa(chn)֪R(sh)˺ϸCCЧѵڵijCˆT
ΣU(xin)W(xu)ƷȫI(y)ָΣU(xin)ˇ^̲Ԅ(dng)ƃxbSSo(h)I(y)
1⼰⻯ˇI(y)
2ȉA늽ˇI(y)
3ȻˇI(y)
4ˇI(y)
5ϳɰˇI(y)
6ѽ⣨ѻˇI(y)
7ˇI(y)
8Ӛ乤ˇI(y)
9صˇI(y)
10ˇI(y)
11^ˇI(y)
12ˇI(y)
13ǻˇI(y)
14ۺϹˇI(y)
15ˇI(y)
16úˇI(y)
17ʯa(chn)ˇI(y)
18żˇI(y)
19Ԅ(dng)ƃxI(y)
20ΣU(xin)W(xu)Ʒ}(ch)I(y)
䌍(sh)Ұȫ߷Ҏ(gu)ҪЌ(sh)߸ΣИI(y)ĘI(y)ˆTȫ(qing)ˆTİȫR(sh)ȫI(y)ȫa(chn)ˮƽP(gun)(xing)£
Ӗ(xn)(du)
ΣU(xin)W(xu)Ʒa(chn)(jng)IλĘI(y)ˆTT^m(x)TMLΣU(xin)W(xu)Ʒa(chn)(jng)IλĘI(y)ˆTָƷˆTSL(jng)a(chn)SL(jng)}챣ˆTΣU(xin)W(xu)Ʒa(chn)һTΣƷƷُˆT
ycx-Һλyԭx
ڻa(chn)У회(du)NϵM(jn)М(zhn)_ęzyԾSa(chn)(wn)ƺṩ(j)zyǻxҪ(ni)֮һ
һʽӋ(j)
ʽ(ҲQ(ji)ʽ)Ӌ(j)(ҊD4-18)ǻw(dng)Ĺ(ji)ԭw(jng)(ji)bÕr(sh)a(chn)ĉ(sh)F(xin)yġ@Ŀǰa(chn)Мyõķ֮һ
(j)Ŭ̺wBm(x)Էʽƌ(do)ʽֻҪyP,ͿԓQ
D(zhun)Ӌ(j)
D(zhun)Ӌ(j)ҪС(ÿСr(sh)װ)y乤ԭҲǹ(ji)F(xin)九(ji)Ԫǹ̶ģǿ¸(dng)D(zhun)
D4-20ʾһ(g)¸(dng)D(zhun)bñڈAFΜyУ(dng)yw¶ͨ^r(sh)D(zhun)ӵĹ(ji)D(zhun)(hu)F(xin)ˉ(du)D(zhun)Ӯa(chn)һ(g)ϵʹD(zhun)Ƅ(dng)ڜyϿ^D(zhun)ƕ(hu)ʹ(ji)Чһλãa(chn)D(zhun)w|(zh)(du)D(zhun)Ӯa(chn)ĸߕ(hu)_(d)ƽ(du)֪w(j)ƽr(sh)D(zhun)ӵλӋ(j)õwM(jn)w
Ҫע(du)ͬһ(g)D(zhun)Ӌ(j)(dng)wܶȸD4-20D(zhun)Ӌ(j)ԭD׃r(sh)D(zhun)ͬһ߶λ(du)(yng)Dzͬ
ݷeʽӋ(j)
AX݆Ӌ(j)
EAX݆ÿD(zhun)(dng)1/4ųıy|(zh)һ(g)ݷeEAX݆ÿD(zhun)һųıy|(zh)ݷe4(du)һ֪ęEAX݆Ӌ(j)yD(zhun)
EAX݆Ӌ(j)õݷeʽӋ(j)߀݆Ӌ(j)X݆Ӌ(j)pD(zhun)(ݗU)Ӌ(j)
u݆Ӌ(j)
D4-22ʾw(dng)Ĺܵ(ni)bһ(g)D(zhun)(dng)~݆(dng)wͨ^~݆r(sh)wĄ(dng)ʹ~݆D(zhun)(dng)һһwD(zhun)cٳɾP(gun)ϵy~݆D(zhun)ٻD(zhun)(sh)ͿԴ_^ܵw
˜y~݆D(zhun)u݆Ҫʹøߌ(do)Բܵnj(do)Ųϣ@ⲿȦԸܵ~݆D(zhun)(dng)r(sh)·Ĵ׃
@NyҪڹܵзD(zhun)(dng)Ԫ(hu)ɉpʧws߀ܵ
늴Ӌ(j)
D4-23ʾ(dng)y|(zh)Ќ(do)ԵҺw|(zh)r(sh)늴ŸБ(yng)ԭy(do)wڴň\(yn)(dng)a(chn)늄ݣБ(yng)늄ݴСcwƽٳˣywa(chn)늄ݾͿӋ(j)ٴСС
˱y(do)ܵĹܱڶ·ʹy(do)ڴňбMܵؽ͜upy(do)ܑ(yng)ɷnj(do)ŵĸƳ粣䓻P䓲ϵ(dng)ʹòP䓲ϕr(sh)wе늄ݱܱڶ·Ҫڜyܵă(ni)Ϳ^ӻr^ܡ
늴Ӌ(j)c(din)܉yA}ҺԼйww({)wSҺwֻܜy(do)Һw
늴Ӌ(j)br(sh)һҪh(yun)xһ늴ň(늙C(j)׃),ʹעSo(h)zֹ늘Ocܵg^Ɖ
uӋ(j)
wдֱһ(g)͵ul(f)w(dng)Z(sh)_(d)һ(sh)ֵr(sh)(hu)ήa(chn)ƽР½F(xin)u@ЩuֵԵ·ʷQu֡u֡(ҊD4-24)
(dng)u֮gľxhͬеău֮gľxl֮ȝMh/l=0.281r(sh)ta(chn)ĜuǷ(wn)
˕r(sh)(c)ua(chn)lfcwƽٶvul(f)wČdP(gun)ϵ
f=Stv/a
ʽS,˹ڹϵ(sh)(dng)Z(sh)Re=51021510⁴r(sh)St=0.2ɴ˿Ҋ(dng)S,ƞ鳣(sh)r(sh)ua(chn)lfcwƽvȣylʼQ
ulʵęzyжNݷ(yng)