�B(ti)ʯ\W(wng)ʩ(zhn)
(1)ƽ:O(sh)B(ti)�ʯ\W(wng)ǰ_摪(yng)ƽҪ_(d)ι̷(wn)(do)Vƽ
(2)̎:O(sh)A(ch)ǰ͵|(zh)Ҫ(wn)|(zh)(ɰۡѽǵ)횲ÆΪʩ̎
(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)s90gW(wng)ɞ횞ͬ|(zh)䓽z3.20mmpϽgogW(wng)̶̎go˶O(sh)λúO(sh)ӋDʾB(ti)ʯ\W(wng)wԽY(ji)ϴֱB(ti)ʯ\W(wng)25cm̎_ʼֱ½Ӌ4̎(25cmo(h)|̎);4̎rMB(ti)ʯ\W(wng)·W(wng)회·һһwBY(ji)wԽY(ji)ˮƽB(ti)ʯ\W(wng)߅25cm̎һcÿ25cmx^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\ʩrMӿvӽeʩӌӽBȫw
ʩ
(1)_̶ܹB(ti)ʯ\W(wng)䓽zW(wng)׃ʯϲһMһԱCB(ti)ʯ\W(wng)ΠÿһĴͶ#
(2)ÿMB(ti)ʯ\W(wng)ոͬrͶԱCB(ti)ʯ\W(wng)
(3)ԙC(j)е˹лƽ϶܌0.5B(ti)ʯ\W(wng)tֶͶÿͶ롣
(4)ⲿ¶λ˹R܌^ÿ1/3̎O(sh)(ni)ַÿƽ(ni)ƽ4̎O(sh)ÿһ̎ԃɾW(wng)Ŀg(ni)go0.5ߕr1/2̎ԃɗlM(jn);30cmʹ
(5)wǰ회픲ʯƽ;wr÷wAй̶ǶcY(ji)cнEÿ20cmһнʽpɽgoÿB(ti)ʯ\W(wng)O(sh)EM(jn)ʩ