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* * * * * * * * *1 *2 * * * * * * * *12 * * * * * * *1 *2 12* * * * * * * *
i12=n21=D2/D1 i12=n12=D2/D1 i12=n12=D1/D2 i12=n21=D1/D2
12+16+(14+1×2)×2 12+16+14+1×2×2 12+16+14×2+1×2 12+16+(14+1)×2×2
* * * * * * * * *1*2 * * * * * * * *12 * * * * * * *1*2 12* * * * * * * *
* * * * * * * * * 1 * 2 * * * * * * * * 12 * * * * * * * 1 * 2 12 * * * * * * * *
11/12 = U1/U2 11/12 = U2/U1 11/12 = U22/U12 无明显排
δ12=δ21 δ12=0.5δ21 δ12=2δ21 δ12=0.25δ21
2.1x(P/F,12%,1)+2.205x(P/F,12%,2)+22.05x(1+2%)x(P/F,12%,2) 2.1/(12%-5%)+22.05x(1+2%)x(P/F,12%,2) 2.1x(P/F,12%,1)+2.205x(P/F,12%,2)+22.05x(1+2%)x(P/F,12%,3) 2.1/(12%-5%)+22.05x(1+2%)x(P/F,12%,3)
i12=Z2/Z1 i12=1-Z2/Z1 i12=Z1/Z2 i12=1+Z1/Z2
2.1 ×(P/F,12%,1)+2.205×(P/F,12%,2)+22.05×(1+2%)×(P/F,12%,2) 2.1/(12%-5%)+22.05 x(1+2%) ×(P/F,12%,2) 2.1×(P/F,12%,1)+2.205×(P/F,12%,2)+22.05×(1+2%)×(P/F,12%,3) 2.1/(12%-5%)+22.05×(1+2%)×(P/F,12%,3)
* * * * * * * * *1*2 * * * * * * * * 12 * * * * * * * 1*2 12* * * * * * * *
“1”+2=“12” “1”+2=“3” “1”#2=“12” “1”&2=“3”
2.1x(P/F,12%,1)+2.205x(P/F,12%,2)+22.05x(1+2%)x(P/F,12%,2) 2.1/(12%-5%)+22.05x(1+2%)x(P/F,12%,2) 2.1x(P/F,12%,1)+2.205x(P/F,12%,2)+22.05x(1+2%)x(P/F,12%,3) 2.1/(12%-5%)+22.05x(1+2%)x(P/F,12%,3)
*********1*2 ********12 *******1*2 12********
12a36b<CR> 12a34b<CR> 12,a,34,b<CR> 12a34b<CR>