图中的R20，R40怎样画？CAD
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http://zhidao.baidu.com/question/363802139.html?oldq=1
绛旓細R40锛氬厛纭畾宸﹀彸涓や釜R40鍦嗗姬鐨勫渾蹇冿紝鍦嗗績鍦ㄦ按骞充腑蹇冪嚎涓婏紝涓旇窛绂讳负200-40*2锛120锛岀‘瀹氬渾蹇冨悗鐢籖40鍦嗭紱R20锛氬厛纭畾鍦嗗績锛屽皢125闀跨殑涓婅竟绾垮悜涓嬬瓑璺濇垨骞崇Щ20锛鎵寰楃嚎娈电殑涓ょ鐐瑰嵆涓哄渾蹇冧綅缃傜敾鍦嗗悗锛屼笌R40鍦嗕綔澶栧叕鍒囩嚎鑾峰緱杞粨鍚庯紝鍐嶈鍓嵆鍙
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绛旓細R20R80鍦嗗績宸茬煡锛屽厛鐢汇備互R20鍦嗗績涓哄渾蹇冿紝20+40涓哄崐寰勭敾鍦1锛涗互R80鍦嗗績涓哄渾蹇冿紝80+40涓哄崐寰勭敾鍦2锛涘渾1鍦2浜ょ偣涓哄渾蹇冿紝40涓哄崐寰勫緱鍑R40銆傚啀鍒嗗埆浠ヤ袱涓猂80鍦嗗績涓哄渾蹇冿紝80-10涓哄崐寰勭敾鍦3銆4锛涘渾3鍦4浜ょ偣涓哄渾蹇冿紝10涓哄崐寰勫緱鍑篟10銆
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绛旓細鍥炵瓟锛氫綔鑰 杩欏浘涓嶆槸寰堟竻鏅板晩 涓よ竟瀵圭О? 灏忓姬20 澶у姬40?
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