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ֳʽ

ͼ3-16 ڷһͼ

ͼ3-17 ڷһͼ

˵ڷһһڷһݻƶϸƴ˷ڲṹ䣬׷湦ܡϸťظǡڡͲͰȲۡͨо˻ѧ¶ֲֳλƣԸʵķʽû๤ϣӲʵֱʹС

19

ֳʽ

ڷ

ͼ3-18 ڷͼ

˵ڷһڷݻƶڸڲṹʵʱλùխСһڷԲͣʹøΪԲ󣬸ΪĻơڻǰڲԲ̣ʹڿɸݰťƶλ󷽣ӵ㹻Ŀռûɨз鷳 ۷

ͼ3-19 ڷͼ

˵ڷһڷʮݻƶһϸֱơϸչʾλáذťǶȵڰťڡ̬ͬʱװýƣ֧ܵƣڳϣûȡʱ򣬽⡣

20

ֳʽ

ܷ

ͼ3-20 ڷIJͼ

ͼ3-21 ڷIJͼ

˵ڷһڷݻƶϸֱ̬ڰڶȣӦԲͬ󡣸оֱת۵ʽƳֲ̬ͬ

21

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3.1.3ڷ ٷһ

ͼ3-22 ڷһͼ

3-23 ڷһͼ

3-24 ڷһͼ

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