<>这是我们学校的校内比赛</P>
<>由于我们都是新生,没什么经验希望大家给予指导。谢谢</P>
< align=center><B>球门的危险区域
</B>
<p>
<P><FONT face="Times New Roman" size=3> </FONT></P>
<P>在足球比赛中,球员在对方球门前不同的位置起脚射门对球门的威胁是不一样的。在球门的正前方的威胁要大于在球门两侧射门;近距离的射门对球门的威胁要大于远射。已知标准球场长为<st1:chmetcnv TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue="104" UnitName="米" w:st="on">104米</st1:chmetcnv>,宽为<st1:chmetcnv TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue="69" UnitName="米" w:st="on">69米</st1:chmetcnv>;球门高为<st1:chmetcnv TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue="2.44" UnitName="米" w:st="on">2.44米</st1:chmetcnv>,宽为<st1:chmetcnv TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue="7.32" UnitName="米" w:st="on">7.32米</st1:chmetcnv>;球门区(小禁区)宽<st1:chmetcnv TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue="18.32" UnitName="米" w:st="on">18.32米</st1:chmetcnv>,(距球门端线)长为<st1:chmetcnv TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue="5.5" UnitName="米" w:st="on">5.5米</st1:chmetcnv>;罚球区(大禁区)长<st1:chmetcnv TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue="40.32" UnitName="米" w:st="on">40.32米</st1:chmetcnv>,(距球门端线)长<st1:chmetcnv TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue="16.5" UnitName="米" w:st="on">16.5米</st1:chmetcnv>。
<p>
<p>
<P>请你结合足球场地和足球比赛的实际情况建模分析球门前方的危险区域。
<p>
<p>
<P>
<P><FONT face="Times New Roman" size=3></FONT></P>
<p>
[此贴子已经被作者于2005-4-23 10:39:10编辑过]
|