楂樹腑鐗╃悊鍏稿瀷渚嬮姹囩紪
鍏夊閮ㄥ垎
53
銆佸鍥?/p>
48-1
鎵�绀猴紝鎶樺皠鐜囦负
n
鐨勭幓鐠冪爾鐨勪袱闈㈡槸骞宠鐨勶紝鐜荤拑鐮栧帤搴︿负
h
锛屼竴鏉熺粏鍏?/p>
鏉熷皠鍒扮幓鐠冪爾涓婅〃闈㈢殑鍏ュ皠瑙掍负
i
锛屽厜绾夸竴閮ㄥ垎浠庝笂琛ㄩ潰鍙嶅皠鍥炵┖姘斾腑锛涘彟涓�閮ㄥ垎鎶樺皠鍏ョ幓鐠?/p>
鐮栵紝鍦ㄧ幓鐠冪爾涓嬭〃闈㈠彂鐢熷弽灏勶紝鍙堝湪涓婅〃闈㈡姌灏勫悗灏勫叆绌烘皵涓�傛眰锛氫笂琛ㄩ潰鐨勫弽灏勫厜绾?/p>
I
涓庝笅
琛ㄩ潰鍙嶅皠锛屾姌灏勫洖鍒扮┖姘旂殑鍏夌嚎
II
鐨勪晶绉昏窛绂讳负澶氬皯
?
鍒嗘瀽涓庤В锛?/p>
鍏夎矾鍥惧鍥?/p>
48-2
鎵�绀恒�傚厜绾垮皠鍒?/p>
A
鐐癸紝鍙嶅皠鍏夌嚎涓?/p>
I
锛屾姌灏勫厜绾垮皠鍒颁笅琛ㄩ潰
C
鐐瑰啀鍙嶅皠鍒颁笂琛ㄩ潰
B
鐐癸紝褰㈡垚鎶樺皠鍏夌嚎
II
銆?/p>
鐢辨姌灏勫畾寰嬬煡锛?/p>
sin
sin
i
n
r
飥?
[1]
鐢卞浘鐭ワ細
AB=2htgr [2]
鍏夌嚎鈪＄浉瀵?/p>
I
鐨勪晶绉昏窛绂?/p>
d
涓猴細
d=ABcosi [3]
鑱旂珛瑙?/p>
[1][2][3]
寮忓緱锛?/p>
d=
2
2
sin
2
sin
h
i
n
i
飥?/p>
54
銆佸鍥?/p>
49-1
鎵�绀猴紝涓夎褰?/p>
ABC
涓轰竴绛夎叞鐩磋涓夋１闀滅殑涓绘埅闈€�備护涓�鍗曡壊鍏夌嚎
DE
骞宠
浜?/p>
AB
闈粠绌烘皵涓嚜
AC
闈㈠皠鍏ワ紝缁?/p>
AB
闈㈠弽灏勫悗浠?/p>
BC
闈㈠皠鍑猴紝
FG
涓哄嚭灏勫厜绾匡紝鍏夌嚎
DE
銆?/p>
FG
鐨勮蛋鍚戝潎鍙敤鎻掗拡娉曞疄楠岀‘瀹氬嚭鏉ャ�?/p>
锛?/p>
1
锛夎瘯鐢ㄥ嚑浣曚綔鍥炬硶鍦ㄥ浘涓敾鍑哄湪妫遍暅鍐呯殑鍏夎矾璧板悜锛?/p>
锛?/p>
2
锛夎瘉鏄庯細灏勫埌
AB
闈笂鐨勫厜绾夸竴瀹氬彂鐢熷叏鍙嶅皠銆?/p>