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ʳ¡ֹܸ޹˾ ֹܸ ʳɾֹܸ޹˾ó׹˾ ֹܸ޷ܶǮ ʳξֹܸ޹˾ ʳɿᆱֹܸ޹˾ Сھֹܸ ʳǬ꾫ֹܸ޹˾ ʳɾֹܸ޹˾Ϣ ֹܸ쳧
ʳɾֹܸ޹˾ ʲôǾֹܸ? ݾֹܸ֪ܲʶ ൺʳɾֹܸ޹˾۲ ɽijǾֹܸܳ ɽijǾֹܸܳ ʳɾֹܸ޹˾Ϣ ݾֹܸܲ ʳɾֹܸ޹˾绰 ȪԴֹܸ޹˾
ʳɾֹܸܳ ʳɾֹܸ޹˾ö ֹܸܼӹʲôں 20#ֹܸи 15crmoֹܸ ˲ʳɾֹܸܹ˾Ա ʳپֹܸ޹˾ ˳ͨ־ֹܸ ֹܸܶѡʳ ൺʳɾֹܸ޹˾ô
쾫ֹܸ޹˾ ʳɾֹܸܳϢ ֹܸܲ ֹܸܰ ʳɾֹܸ޹˾ ˾ֹܸܳϢ ֹܸܼӹ ʳɾֹܸ޹˾ϰ ʳɱʤؾֹܸ޹˾绰 ʳɾֹܸܳ
ʳǿֹܸ޹˾ ˲ʳɾֹܸ޹˾Ϣ绰 ֹܸܹ˾Ϣ 304޷쾫ֹܸܴ ޷쾫ֹܸ ʳɾֹܸ޹˾ҪƷ ξֹܸܳ ɽֹܸܳЩ ֹܸ6 ʳɾֹܸ޹˾
޷쾫ֹܸ ʳɾֹܸ޹˾û ʳ16Mnֹܸܳ ʳɾֹܸô ʳֹܸͨ޹˾Ϣ ʳɾֹܸܹɷ޹˾Ϣ ʳɾֹܸ޹˾(· ֹܸܳȡ˰ ھֹܸ ʳɾֹܸ޹˾Ǹ˾Ͷʵ
ʳ¡ֹܸй ʳɾֹܸô ʳɾֹܸ޹˾û ʳɾֹܸ޹˾Ʊ ʳɹɾֹܸ޹˾ ʳɱʤؾֹܸ޹˾绰 ൺʳɾֹܸ޹˾ô 40crֹܸи׼ӹ ʳɾֹܸ޹˾ô ʳɾֹܸ޹˾
ֹܸ ֹܸ ʳɾֹܸ޹˾Ǩ ʳɾֹܸ޹˾ ൺʳɾֹܸ޹˾ ʳɾֹܸ޹˾ ֹܸܹ˾ ֹܸܳϢ ˹ضԪֹܸ޹˾ ʳɾֹܸ޹˾ô
ʳᆱֹܸ ֹܸʳ ʳɺֹ̩ܸ޹˾ô ʳɷɾֹܸ ʳɾֹܸܹ˾ҳ ֹܸܼӹ ʳپֹܸ޹˾ ʳɾֹܸܹɷ޹˾ ˲ʳɾֹܸ޹˾Ϣ绰 ʳɷ˾ֹܸ޹˾ϵʽ
ʳɾֹܸ޹˾(·) ʳɾֹܸ޹˾ ʳɾֹܸô ֹܸ޷ܶǮ ˲ʳɾֹܸ޹˾ǹ Сھֹܸܳ ʳСھֹܸܼ۸񱨼 ݾֹܸܲͰټҺ ʳɾֹܸ ʳɾֹܸܳ
ʳɴֹܸܳ ɾֹܸ޹˾ 40Crֹܸܶƹ ֹܸܰ ݾֹܸܹ˾Ϣ кֹܸ޹˾ ֹܸ쳧 еžֹܸ޹˾ ֹܸܳЩ ʳᆱֹܸ
żҸ۾ֹܸܳ޹˾ յʳӾֹܸ޹˾ ֹܸܳЩ ֹܸ޷ܶǮ ijǾֹܸܳ ֹܸڱӰ ʳɾֹܸܳ ʳɾֹܸܹ˾ ֹܸ Сھֹܸܳ
ֹܸ ޷쾫ֹܸܿǹ ֹܸ; ֹܸ ʳɾֹܸ޹˾ ʳɾֹܸ޹˾Ǹ˾Ͷʵ ֹܸ޹˾Ϣ 35crmoھֹܾܸ ʳɽݶؾֹܸ޹˾ ˲ʳɾֹܸ޹˾ʴ
ֹܸܳ ൺʳɾֹܸ޹˾ô ʳɾֹܸܹ˾ żҸоֹܸܹ˾ ֹܸĥ ʥֹܸ ʳɾֹܸܳϳַ ʳɱֹܸ޹˾¹ ޷쾫ֹܸ ʳɾֹܸ쳧
ʳɾֹܸ޹˾绰 ֹܸܶʳɼ ˲ʳɾֹܸ޹˾ô ֹܸ޷ܶǮ ֹܸ޹˾ϢϢ ʳɾֹܸ޹˾ַ ֹܸ޷ԲҺѹ͹ëϸܿĹھ5.8 ʳɱʤؾֹܸ ʳؾֹܸ޹˾ ξֹܸܳ
ʳɾֹܸ޹˾ ֹܸ Һѹ޷쾫ֹܸ ʳɾֹܸ޹˾ô ʳʥӾֹܸ ֹܸܳ ʳɱʤؾֹܸ޹˾ ˾ֹܸܳ ֹܸƵ ʳɾֹܸ޹˾
ʳɾֹܸܴô Сھֹܸǹ ֹܸ쳧 ʳɾֹܸܳ 20#ֹܸи żҸоֹܸܹ˾ ݾֹܸܼ۸ пᾫֹܸܳ ޷쾫ֹܸܳ ʳɾֹܸ޹˾Ǹ˾Ͷʵ
ʳɾֹܸ޹˾绰 ھֹܸܶ żҸ۾ֹܸܳ޹˾ ˳ͨ־ֹܸ ൺʳɾֹܸ޹˾ô ʳɾֹܸܳ ֹܸܹ˾Ϣ ϺַֹܸܳϢ ˲ʳɾֹܸܹ˾Ա ʳɾֹܸܳ
ʳɾֹܸܳϳ ʳɾֹܸ޹˾ ʳɾֹܸ޹˾绰 ˳ͨ־ֹܸ Ҿֹܸ ֹܸܳ Сھֹܸ Сھֹܸܳ Һѹ޷쾫ֹܸ 45#ֹܸ