±±¾©Ê¯ÓÍ»¯¹¤Ñ§Ôº2026ÄêÑо¿ÉúÕÐÉú½ÓÊÕµ÷¼Á¹«¸æ
²é¿´: 311  |  »Ø¸´: 1
±¾Ìû²úÉú 1 ¸ö ·­ÒëEPI £¬µã»÷ÕâÀï½øÐв鿴

תÉíØ¼Íü²»µô

Í­³æ (СÓÐÃûÆø)

[ÇóÖú] Ó¢ÓïˮƽÓÐÏÞ£¬Çó°ïæ·­Òëһϣ¬Ð»Ð»

3. Diffusion theory
   The Da values for Se were determined based on the Fickian law (Crank, 1975) considering radioactive decay. The diffusion equation for one-dimensional nonsteady state, considering decay terms, is generally expressed as follows.(·½³ÌÂÔ)
   Assuming that Da is independent of distance and is constant, Eq. (1) is arranged as follows.£¨·½³ÌÂÔ£©

Ó¢ÓïˮƽÓÐÏÞ£¬Çó°ïæ·­Òëһϣ¬Ð»Ð»
111.png

» ²ÂÄãϲ»¶

ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ssssllllnnnn

ÖÁ×ðľ³æ (ÖªÃû×÷¼Ò)

Translator and Proofreader


¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
ÕæÇ¿±ØÊ¤: ½ð±Ò+1, лл 2014-09-15 16:20:49
תÉíØ¼Íü²»µô: ½ð±Ò+5, ·­ÒëEPI+1, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2014-09-16 09:49:24
3. À©É¢ÀíÂÛ
¿¼Âǵ½·ÅÉäÐÔË¥±ä£¬ÎøµÄDaÓÉFickian¶¨ÂÉ£¨Crank£¬1975£©¾ö¶¨¡£¶ÔÓÚһά·ÇÎÈ̬µÄÀ©É¢·½³Ì£¬¿¼Âǵ½Ë¥¼õ£¬Ò»°ã±íʾÈçÏ£º£¨·½³ÌÂÔ£©
¼ÙÉèDaÓë¾àÀëÎ޹ضøÇÒÊǺ㶨µÄ£¬¹«Ê½£¨1£©±»ÅäÖÃÈçÏ£º£¨·½³ÌÂÔ£©
2Â¥2014-09-15 12:45:44
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ תÉíØ¼Íü²»µô µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] Çóµ÷¼Á +5 wos666 2026-04-03 5/250 2026-04-06 10:13 by À¶ÔÆË¼Óê
[¿¼ÑÐ] 377Çóµ÷¼Á +6 by.ovo 2026-04-05 6/300 2026-04-05 22:18 by dongzh2009
[¿¼ÑÐ] 306·Ö²ÄÁÏÓ뻯¹¤Çóµ÷¼Á +7 Àè°ÉÀ²À²ÄãºÜÓÐà 2026-04-03 7/350 2026-04-05 17:18 by Hdyxbekcb
[¿¼ÑÐ] 0832ʳƷ¿ÆÑ§Ó빤³Ìѧ˶282µ÷¼Á +6 ÓãÔÚË®ÖÐÓÎa 2026-04-02 9/450 2026-04-05 11:45 by flysky1234
[¿¼ÑÐ] 085400µç×ÓÐÅÏ¢319Çóµ÷¼Á£¨½ÓÊÜ¿çרҵµ÷¼Á£© +5 ÐÇÐDz»Õ£ÑÛà¶ 2026-04-03 6/300 2026-04-04 21:50 by hemengdong
[¿¼ÑÐ] 298Çóµ÷¼Á +5 zzz£¬£¬r 2026-04-02 8/400 2026-04-04 19:55 by À¶ÔÆË¼Óê
[¿¼ÑÐ] Ò»Ö¾Ô¸ÄÏÅ©090401£¬268£¬Çóµ÷¼Á +5 һľÄñÈ» 2026-04-04 5/250 2026-04-04 17:07 by babysonlkd
[¿¼ÑÐ] 319Çóµ÷¼Á +4 ÐÇÐDz»Õ£ÑÛà¶ 2026-04-03 4/200 2026-04-04 16:25 by ÖзÉÔº¿Õ¹ÜѧԺÑ
[¿¼ÑÐ] 265Çóµ÷¼Á +17 ÁÖÉîÎÂÀ½ 2026-04-01 20/1000 2026-04-04 01:09 by userper
[¿¼ÑÐ] 303Çóµ÷¼Á +9 DLkz1314. 2026-03-30 9/450 2026-04-03 18:34 by lsÁõ˧
[»ù½ðÉêÇë] esi¸ß±»ÒýÂÛÎÄÊDz»ÊÇÄܶÔÖбêÓÐËù¼Ó·ÖºÍ°ïÖúÄØ +5 redcom 2026-04-01 6/300 2026-04-03 15:15 by Howard28
[¿¼ÑÐ] ר˶085601Çóµ÷¼Á +7 suyifei 2026-04-03 8/400 2026-04-03 14:00 by ÐÀϲ777
[¿¼ÑÐ] 260Çóµ÷¼Á +3 ÖìÜÆÁÕ 2026-04-02 3/150 2026-04-03 08:44 by yulian1987
[¿¼ÑÐ] 312Çóµ÷¼Á +4 ÉÞÔÂÉ« 2026-04-02 5/250 2026-04-03 08:21 by fangshan711
[¿¼ÑÐ] 302Çóµ÷¼Á +9 zyxÉϰ¶£¡ 2026-04-02 9/450 2026-04-02 23:07 by Âí¶ù¿ì¿ìµØÅÜ
[¿¼ÑÐ] 283Çóµ÷¼Á +3 jiouuu 2026-04-02 4/200 2026-04-02 14:08 by ßÕßÕßÕßÉßÉßÉ
[¿¼ÑÐ] ²ÄÁϵ÷¼Á +11 Ò»ÑùYWY 2026-03-31 11/550 2026-04-01 22:25 by zhouyuwinner
[¿¼ÑÐ] 08¹¤¿Æ275Çóµ÷¼Á£¬¿É¿ç¿¼¡£ +5 AaAa7420 2026-03-31 5/250 2026-04-01 15:21 by 159357hjz
[¿¼ÑÐ] Ò»Ö¾Ô¸±±¾©¿Æ¼¼´óѧ085601²ÄÁϹ¤³ÌÓ¢Ò»Êý¶þ³õÊÔ×Ü·Ö335Çóµ÷¼Á +5 Ë«ÂíβƦÀϰå2 2026-03-31 5/250 2026-04-01 09:04 by oooqiao
[¿¼ÑÐ] Ò»Ö¾Ô¸Öк£Ñó²ÄÁÏ357 +4 Âó¶÷Àò. 2026-03-30 4/200 2026-03-31 14:35 by ¼Çʱ¾2026
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û