168page

st e =^lt 5.J 161 5. fl:z.l= HI= E"JE 3C e e4 44+ H ulol=. _ tr _ tr] r.l(um) E9l olr ? olts H ,J 4 plrl (mm) E+l olr}. fl:zl = p p E+r+ Er#ql^l ++g + +^J, zl =8, "JEl+, qlfi rflr oI€ f;;ql^] + "Jg.il hr, e, g., ;., qa ',j ++ Eql^l = €-6}z1 9+4. "J q!4 sE fl :zl E F6l -&gd "l *g *= =j :z € + #+ql^l + ++gtrI. 6. at %Sn: loo 0.43 + d* 7. +49 -&+d :2327 B e-l ++d : 327"C 8. tse 88€s.21 Ezl(323C) "IE"il dxt*Eg 4+ B+ +4^I"lel ,1Erlq ql 9aI +4 s.Hql +E.6-Izl ulzlxl *6IE-E ^I€ _ sl;(l 9*=+. e. szl ql EI+€ E El Eil ol rl zl. yl;l 4 E trE E tI+Eg z{ z _ la}{ gg€rj g _ tr E +Eg +zl 6}zl "ll+ol4. 10. + ++E e+rJ EisJE"l €Cg+. cuoSns(n)trg -s= gEql^] € c q q Hliil4 "Jzlzl =r.li6}+. lSAl^'l= +4-CuoSne ZlE4l^-J CusSn(e)*ol €C €tr}. 11. /l ++E a+?J ElaJEol glsq, _E-+ tlgql^-l ale 6I-r. NisSna, NisSnz, NisSn9-E €zI *uI. 12. +ttrl+4 (IV), g EI+4 ([), +t+^J ([), sF9 = Bt+4 (II), +^] t+EE(+ e +E) 13. g+H, o}.il, rzI=+EtI, up$lts ,J+ *6JC 6lE+dslErg. 5rol gl+. 14. O EA+q A4"Jzlzl 7)4I;1. €) EE+g zltr_At) doJrJ6ITI .JqU+. €) E.gd4col €gzlr Ea +41 ulxlz| 7)4L1. 15. PVC, =4EEBzJl, r+s rloltsaJ zJt f,ol 9l+. 16. c BolSfE E#=q €rlzlzl ;ll+ + *g+ E#E +t}g B=+. ol "I + E6l ltlflul. @ +'lE €s'21 3lTztlz) tr9zls5' fzJ6'J+. @ zlt*E +t+^lE 'J;. +d6l *all€ elztlz) iilH}++. @ ?zlzrlE '+=+. @ e=*el pol$f$ ;ll*l qr+= ^lz}+r+. @ "J"J 8"lol aqzlE q+= "J^l 6zla}fr,4zl qr+= 4l+.J4. tdlzlE *9 "l slo}4 4 ol uI.