1. 1 1 2 2. 4 1 1 ON 2 ee 3 2 1 VY 2 SN 3 5 1 sk 1 a 75 b 3. 2 5 90 2 ZCUN E 53N m 7 1 1 ll 1 2 a C b 4. NR CC 9 29 Where re 1 SE 1 MA 2 Ug 2 5. lt oe 1 1 2 3 1 2 4 a 1 2 5 SE RE GC CS SNC Ca EG Nd i 1 2 3 4 5 6 7 6 1 2 3 NN NN NC RR RR RC A NDR 1 2 3 4 3 ASN a a CNC A RAN a ee yA 1 i FR 2 6. 3 N i 6 2 WE a NN 1 B PTP 1 VE 2 10 2 CE RS ET 3 4 lt 7. JWWA B 135 2000 6 P8 7 1 P9 0 75MPa 0 lt 7 2 P10 P11 7 3 P12 8. 3 4 7 1 2 3 NN 3 2 et a 2 6 1 9. i 4 a Pi a 5 WM tis gt M16 6ON m 6 4 5 6 1 3 10. 2 1 2 3 4 5 20kg 9 1 jl 2 11. c d e Co a b c RO ee 2 A 1 12. JWWA B 135 2008 7 10 FF a Ra JWWA B 135 oh 6 JWWA B 135 13. c d e 2 a b 2 t 1 a b c d 2 3 1 2 3 14. 7 5 0 75 MPa 1 75 MPa JWWA B 135 2000 PT lt 529 1151 T 103 0001 550 0013 T 730 0844 250 16 6 93 4 12 8 11 4 0749 25 2550 03 3662 4266 06 6536 6430 6 082 234 8130 15. 4 1 1 3 26 O 2 2 JWWAB 135 12 ER JWWA B 135