B(ti)ʯ\W(wng)ʩ(zhn)
(1)ƽ:O(sh)B(ti)ʯ\W(wng)ǰ_摪(yng)ƽ(sh)Ҫ_(d)ι̷(wn)(do)Vƽ
(2)̎:O(sh)A(ch)ǰ͵|(zh)Ҫ(wn)|(zh)(ɰѽǵ)횲ÆΪ(d)ʩ̎
(3)(do)VO(sh):oɰʯO(sh)Ɍ(do)Vӣƽһ߅o(h)|̽hÌ(do)V((do)B)
B(ti)ʯ\W(wng)ʩ
˹_B(ti)ʯ\W(wng)s90㣬gW(wng)ɞ횞ͬ|(zh)䓽z3.20mmpϽgogW(wng)̶̎go˶O(sh)λúO(sh)Ӌ(j)DʾB(ti)ʯ\W(wng)wԽY(ji)ϴֱB(ti)ʯ\W(wng)25cm̎_ʼֱ½Ӌ(j)4̎(25cmo(h)|̎);4̎r(sh)MB(ti)ʯ\W(wng)·W(wng)회·һһwBY(ji)wԽY(ji)ˮƽB(ti)ʯ\W(wng)߅25cm̎һc(din)ÿ25cmx^m(x)ڶO(sh)(Ϸ)회̎һwBY(ji)W(wng)ƽÿƽ4̎(20cmo(h)|ÿM̎s50cmBӽ)ÿwB(ti)ʯ\W(wng)BY(ji)ſͶʯB(ti)ʯ\W(wng)ʯ\ʩr(sh)Mӿvӽe(cu)ʩӌӽBӣȫw
ʩ
(1)_̶ܹB(ti)ʯ\W(wng)䓽zW(wng)׃ʯϲһMһԱCB(ti)ʯ\W(wng)ΠÿһĴͶ#
(2)ÿMB(ti)ʯ\W(wng)ոͬr(sh)ͶԱCB(ti)ʯ\W(wng)
(3)ԙC(j)е˹лƽ϶܌(sh)0.5B(ti)ʯ\W(wng)tֶͶÿͶ
(4)ⲿ¶λ˹R܌(sh)^ÿ1/3̎O(sh)(ni)ַÿƽ(ni)ƽ4̎O(sh)ÿһ̎ԃɾW(wng)Ŀg(ni)go0.5ߕr(sh)1/2̎ԃɗlM(jn);30cm£ʹ
(5)wǰ회픲ʯƽ;wr(sh)÷wAй̶ǶcY(ji)c(din)нEÿ20cmһнʽpɽgoÿB(ti)ʯ\W(wng)O(sh)EM(jn)ʩ