公元前是AD还是BD 公元前是AD还是BD
\u4eba\u8bf4bd\u662f\u516c\u5143\u524d\uff0cad\u662f\u516c\u5143\u540e\u7684\u610f\u601d\uff0c\u662f\u8fd9\u6837\u5417\u5173\u4e8e\u5386\u53f2\u672f\u8bedBC\u548cAD
AD\u662f\u201c\u516c\u5143\u201dAnno Domini\u7684\u610f\u601d,\u201cBC\u201d\u662f\u516c\u5143\u524d\u7684\u610f\u601dBefore Christ,\u4e3a\u4f55\u542c\u5f88\u591a\u4eba\u8bf4ad\u662f\u516c\u5143\u524d\u7684\u610f\u601d?\uff08\u4e0d\u662f\u516c\u5143\u5417?\uff09\u8fd8\u6709\u4eba\u8bf4bd\u662f\u516c\u5143\u524d,ad\u662f\u516c\u5143\u540e\u7684\u610f\u601d,\u662f\u8fd9\u6837\u5417?bd\u6709\u63cf\u8ff0\u5173\u4e8e\u516c\u5143\u7684\u529f\u80fd\u5417?\u8fd9\u4e24\u79cd\u8bf4\u6cd5\u516c\u5143\uff08\u82f1\u8bed\uff1aCommon era,\u7f29\u5199\u4e3aC.E.\uff09,\u5373\u516c\u5386\u7eaa\u5143,\u73b0\u4eca\u662f\u56fd\u9645\u793e\u4f1a\u6700\u591a\u56fd\u5bb6\u91c7\u7528\u7684\u7eaa\u5e74\u6807\u51c6,\u6700\u521d\u6e90\u81ea\u4e8e\u6b27\u6d32\u7b49\u897f\u65b9\u57fa\u7763\u6559\u56fd\u5bb6,\u4ee5\u8036\u7a23\u51fa\u751f\u4e3a\u7eaa\u5e74\u7684\u5f00\u59cb,\u539f\u79f0\u897f\u5143,\u73b0\u4ee3\u5b66\u8005\u4e3a\u4e86\u6de1\u5316\u5176\u5b97\u6559\u8272\u5f69\u800c\u6539\u79f0\u516c\u5143.
\u5728\u82f1\u8bed\u91cc\u201c\u7eaa\u5143\u524d\u201d\u662f\u7528\u201cB.C.\u201d\u6765\u4ee3\u8868,\u201c\u7eaa\u5143\u540e\u201d\u662f\u7528\u201cA.D.\u201d\u4ee3\u8868\uff1b\u201cB.C.\u201d\u662f\u201cBefore Christ\u201d\uff08\u57fa\u7763\u524d\uff09\u7684\u9996\u5b57\u6bcd\u7f29\u5199,\u57fa\u7763\u5f92\u5e38\u8bd1\u4e3a\u201c\u4e3b\u524d\u201d\uff1b\u800c\u201cA.D.\u201d\u5219\u662f\u62c9\u4e01\u6587\u201cAnno Domini\u201d\uff08\u4e3b\u7684\u5e74\u4efd\uff09\u7684\u7f29\u5199,\u57fa\u7763\u5f92\u5e38\u8bd1\u4e3a\u201c\u4e3b\u540e\u201d.
\u6240\u4ee5\u662f\u6ca1\u6709BD\u4e00\u8bf4\u7684
\u516c\u5143\u524d\u4ee5"BD".\u8fd9\u4e2a"B"\u662fbefore\u7684\u610f\u601d.\u5728\u516c\u5143\u5e74\u4efd\u4e4b\u524d\u7684\u610f\u601d
公元前以 B.C.（英文 Before Christ 的缩写，意为“基督以前”）表示，通常写在年份之公元前。ad
AD
我记得是：公元前BC，公元后AD
AD
绛旓細鍏厓鍓浠 B.C.锛堣嫳鏂 Before Christ 鐨勭缉鍐欙紝鎰忎负鈥滃熀鐫ｄ互鍓嶁濓級琛ㄧず锛岄氬父鍐欏湪骞翠唤涔嬪叕鍏冨墠銆
绛旓細鍏厓鍓嶄互"BD".杩欎釜"B"鏄痓efore鐨勬剰鎬.鍦ㄥ叕鍏冨勾浠戒箣鍓嶇殑鎰忔
绛旓細AD AD鏄"鍏厓"鐨勬剰鎬锛屽叏绉版槸Anno Domini銆"鍏厓鍓"鐨勮嫳鏂囩缉鍐欐槸BC锛屽叏绉版槸Before Christ銆傗滃叕鍏冣濇槸鍏巻鐨勭邯鍏冿紝濮嬭浜6涓栫邯锛屽畠鍘熸槸浠ヤ紶璇磋剁ǎ鍩虹潱璇炵敓閭ｄ竴骞翠綔涓哄叕鍏冨厓骞达紝浠庡叕鍏6涓栫邯鍒10涓栫邯锛岄愭笎鎴愪负鍩虹潱鏁欏浗瀹堕氱敤鐨勭邯鍏冿紝鎵浠ュ師鍏堜篃鍙滃熀鐫ｇ邯鍏冣濄傚悗鏉ヨ涓栫晫澶氭暟鍥藉鎵鍏敤锛屼簬鏄氨鏀圭О鈥滃叕...
绛旓細AD鏄滃叕鍏冣滱nno Domini鐨勬剰鎬濓紝鈥淏C鈥濇槸鍏厓鍓嶇殑鎰忔滲efore Christ 鎵撳瓧涓嶆槗锛岄噰绾冲摝锛
绛旓細娌℃湁杩欐牱鐨勮瀹氬惂锛侊紵渚嬪锛欻istorically, people had extensively used Aloe Vera as an herbal medical plant in 1500 B. C. (Before Christ).鍦ㄥ巻鍙蹭笂锛岃姦鑽熶簬鍏厓鍓1500骞存浘琚汉浠箍娉涘綋浣滆崏鑽埄鐢ㄣ侷t is said that in the year of 300 AD(anno domini), there was a kind old man and ...
绛旓細鎴戜滑鎶夾D褰撴垚涓闈㈠锛屽お闃充粠涓滄柟鍗囪捣鏃剁収灏凙D鐨勬椂鍊欙紝灏变細灏勫嚭闃村奖BD锛屽綋澶槼浠庤タ鏂硅惤涓嬫椂锛岄槾褰卞氨浼氬彉鎴怌D.涔熷氨鏄 AD ^2 = BD times CD銆傚皠褰卞畾鐞嗭紝鍙堢О鈥滄鍑犻噷寰峰畾鐞嗏濓細鍦ㄧ洿瑙掍笁瑙掑舰涓紝鏂滆竟涓婄殑楂樻槸涓ゆ潯鐩磋杈瑰湪鏂滆竟灏勫奖鐨勬瘮渚嬩腑椤癸紝姣忎竴鏉＄洿瑙掕竟鍙堟槸杩欐潯鐩磋杈瑰湪鏂滆竟涓婄殑灏勫奖鍜屾枩杈圭殑...
绛旓細杩欑鏂瑰紡鏉ユ簮浜庡笇鑵婂彜鍏告椂鏈,甯岃厞鍙ゅ吀鏃舵湡鏄寚澶х害浠鍏厓鍓600骞存寔缁埌鍏厓300骞寸殑鏃舵湡,闅忕潃娉板嫆鏂(鍏厓鍓625骞-鍏厓鍓547骞)銆佹瘯杈惧摜鎷夋柉(鍏厓鍓572骞-鍏厓鍓501骞)鍜屾鍑犻噷寰(鍏厓鍓330骞-鍏厓鍓275骞)绛変汉鐗╃殑鍑虹幇,甯岃厞浜哄潥鎸佹紨缁庢帹鐞嗕綔涓鸿瘉鏄庢暟瀛︾殑鍞竴鏂瑰紡,鏄鏁板鏈閲嶈鐨勮础鐚,瀹冨皢鏁板浠庢湪鍖犵殑宸ュ叿绠卞拰...
绛旓細鍨傚緞瀹氱悊鏄暟瀛﹀钩闈㈠嚑浣曪紙鍦嗭級涓殑涓涓畾鐞嗭紝瀹冪殑閫氫織鐨勮〃杈炬槸锛氬瀭鐩翠簬寮︾殑鐩村緞骞冲垎寮︿笖骞冲垎杩欐潯寮︽墍瀵圭殑涓ゆ潯寮с傛暟瀛﹁〃杈句负锛氱洿寰凞C鍨傜洿浜庡鸡AB锛屽垯AE绛変簬EB锛屽姬AD绛変簬寮BD锛堝寘鎷紭寮т笌鍔ｅ姬锛夛紝鍗婂渾CAD绛変簬鍗婂渾CBD銆傚畾鐞嗙畝鍙 娆у嚑閲屽緱锛堝彜甯岃厞鏁板瀹跺笇鑵婃枃锛毼曄呂何晃滴刮次ς.锛鍏厓鍓330骞...
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绛旓細鍏紡鎺ㄥ杩囩▼锛氣憼鈭礐D²+AD²=AC²,CD²+BD²=BC²鈭2CD²+AD²+BD²=AC²+BC²鈭2CD²=AB²-AD²-BD²鈭2CD²=(AD+BD)²-AD²-BD²鈭2CD²=AD²+2AD路BD+BD²...
