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缂備礁绻掑В濠傤潩閺冨偆鍚�闁告帒娲ょ槐鎴﹀嫉椤栨繍娼掑Λ?
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娌逛环瀵逛笘鐣岀粡娴庣殑褰卞搷
韬唤璁よ瘉
The W12 x 50 flange is made of A992 steel and is used as a column that has a length of 20 ft. If its ends are assumed pin supported, and it is subjected to an axial load of 150 kip, determine the factor of safety with respect to buckling.
婵犻潧鍊归悧婊勬叏閹间礁绠戦幖瀛樼箘閻ゅ嫰鏌涢幇顓犳噧闁哥偛顕埀?
涓讳綋缁撴瀯鏂藉伐鏂规
閸栨鍋栨禍?
闂傚倷绀侀幉鈥愁潖缂佹ɑ鍙忛柣銏犵仛閸嬫﹢鏌曟竟顖氭噹瀹曘儱鈹戦悙鍙夘棡閻㈩垪鏅犲畷顖涙償閳藉棛鍞甸柣鐘烘閸庛倗绮氶幐搴涗簻闁哄啠鍋撴繛鑼枎椤曪綁顢楅崟顒�娈熼梺闈涳紡鐏炶偐绌块梻?
鐨囧鎴樹簤鍗囩骇鎵�闇�閲戝竵
浜烘暀鐗堣鏂囦竷骞寸骇涓嬪唽鏁欏璁″垝
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濂戒箰涔版畫娆″搧鍟嗗煄
PCL PEG PCL宓屾鍏辫仛鐗╃殑鍚堟垚涓庢�ц兘
浜虹墿浜斿畼绱犳潗
杈撻�佹満鍙告満鑰冭瘯
绾崇◣浜哄疄琛岄浂绋庣巼鐨勶紝璇ョ粡娴庝笟鍔″搴旂殑杩涢」绋庨
闁告垵鎼鍓佹嫚娴ｈ顫栧☉?
涔￠晣鍥㈠鎬荤粨
绾㈡ゼ姊︿腑鐨勪汉鐗╁叧绯诲浘
astm e94闁哄秴娲ら崳顖涚▔椤撶喐鐎柣?
闁硅埖顨呯缓鍓у閻ゎ垰澧伴柟鑸点仦缂嶅绱掗悡搴㈠�ら柣?
he was fast asleep绠�绛旈绛旀
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