24СʱÈÈÃŰæ¿éÅÅÐаñ    

Znn3bq.jpeg
ÉÇÍ·´óѧº£Ñó¿ÆÑ§½ÓÊܵ÷¼Á
²é¿´: 837  |  »Ø¸´: 5

×ô¹Ë÷øÅÎ

гæ (³õÈëÎÄ̳)


[½»Á÷] ѹºÛ·¨Çó¶ÏÁÑÈÍÐÔµÄAnstisʽ£¬CµÄÁ¿¸ÙÊÇʲô£¿

K1c=0.016*£¨E/H£©^(1/2)*P*c^(2/3)
K1cµÄµ¥Î»ÊÇMPa*m^(1/2)£¬PµÄµ¥Î»ÊÇN£¬ÄÇcµÄµ¥Î»ÊÇʲô£¿
±ÈÈç˵²âµÃµÄÁÑÎÆ°ë³¤ÊÇ15¦Ìm£¬ÄÇÎÒ¼ÆËãµÄʱºòcÊÇÖ±½Ó´úÈë15£¬»¹ÊÇ»»Ëã³É0.015mm´úÈë0.015ÄØ£¿
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

» ÇÀ½ð±ÒÀ²£¡»ØÌû¾Í¿ÉÒԵõ½:

²é¿´È«²¿É¢½ðÌù

ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
¼òµ¥»Ø¸´
2018-03-23 17:44   »Ø¸´  
×ô¹Ë÷øÅÎ(½ð±Ò+1): лл²ÎÓë
yywvvd0763Â¥
2018-03-23 17:49   »Ø¸´  
×ô¹Ë÷øÅÎ(½ð±Ò+1): лл²ÎÓë
whdbx614Â¥
2018-03-23 17:54   »Ø¸´  
×ô¹Ë÷øÅÎ(½ð±Ò+1): лл²ÎÓë
rjhvxf035Â¥
2018-03-23 18:01   »Ø¸´  
×ô¹Ë÷øÅÎ(½ð±Ò+1): лл²ÎÓë
csqzgq036Â¥
2018-03-23 18:15   »Ø¸´  
×ô¹Ë÷øÅÎ(½ð±Ò+1): лл²ÎÓë
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ ×ô¹Ë÷øÅÎ µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] È˹¤ÖÇÄÜ320µ÷¼Á08¹¤À໹Óлú»áÂð +16 Õñ¡ªTZ 2026-04-10 17/850 2026-04-14 00:50 by Íõ¬Bè±
[¿¼ÑÐ] 22ר˶Çóµ÷¼Á +8 haoyunÉϰ¶ 2026-04-11 10/500 2026-04-13 22:15 by zhq0425
[¿¼ÑÐ] 293Çóµ÷¼Á +16 ÎÒ°®¸ßÊý¸ßÊý°®Î 2026-04-12 18/900 2026-04-13 21:47 by ѧԱJpLReM
[¿¼ÑÐ] 295·ÖÇóµ÷¼Á +13 ?ÒªÉϰ¶? 2026-04-10 13/650 2026-04-12 15:37 by laoshidan
[¿¼ÑÐ] 291Çóµ÷¼Á +11 ¹ØÒä±±. 2026-04-09 12/600 2026-04-12 10:32 by ÄæË®³Ë·ç
[¿¼ÑÐ] 299Çóµ÷¼Á +8 ZVVZ13 2026-04-08 8/400 2026-04-12 00:40 by À¶ÔÆË¼Óê
[¿¼ÑÐ] »¯¹¤µ÷¼ÁÇóµ¼Ê¦ÊÕÁô£¡Ò»Ö¾Ô¸Ê§Àû£¬Ì¤Êµ¿Ï¸É£¬ÓÐÖ²ÎïÌáÈ¡¿ÆÑо­Àú +20 yzyzx 2026-04-09 21/1050 2026-04-12 00:12 by ССССÀ²À²À²
[¿¼ÑÐ] Ò»Ö¾Ô¸Ïôó0856£¬306Çóµ÷¼Á +15 Bblinging 2026-04-11 15/750 2026-04-11 22:53 by 314126402
[¿¼ÑÐ] ҩѧר˶µ÷¼Á +8 ? һ·Éú?»¨? 2026-04-10 10/500 2026-04-11 21:21 by zhouxiaoyu
[¿¼ÑÐ] Çóµ÷¼Á +6 µçÆø300Çóµ÷¼Á²» 2026-04-08 6/300 2026-04-11 20:14 by ÄæË®³Ë·ç
[¿¼ÑÐ] 085400 328·Ö Çóµ÷¼Á +10 ιÄãÒ»¸ö´ó³È×Ó 2026-04-09 14/700 2026-04-11 19:53 by lqspecial
[¿¼ÑÐ] 283Çóµ÷¼Á +22 ÄǸöàà×Ó 2026-04-09 22/1100 2026-04-11 10:41 by ÄæË®³Ë·ç
[¿¼ÑÐ] 337Çóµ÷¼Á +4 ÑÐs. 2026-04-10 4/200 2026-04-11 08:57 by zhq0425
[¿¼ÑÐ] 284Çóµ÷¼Á +12 archer.. 2026-04-10 13/650 2026-04-11 08:44 by zhq0425
[¿¼ÑÐ] µ÷¼Á +12 ¾í¾í¾íÐIJË_ 2026-04-09 13/650 2026-04-10 22:36 by Ftglcn90
[¿¼ÑÐ] ³õÊÔ·Ö332£¬Ò»Ö¾Ô¸±¨¿¼Î÷±±¹¤Òµ´óѧ£¬ +11 ¹ÊÈË?? 2026-04-09 11/550 2026-04-09 21:54 by JineShine
[¿¼ÑÐ] 085400µç×ÓÐÅÏ¢Àࣨ´¨´ó¿ØÖƹ¤³Ì£©Çóµ÷¼Á¿É¿çרҵ ÇóÀÏʦÁªÏµ +3 626776879 2026-04-08 3/150 2026-04-09 16:05 by Öí»á·É
[¿¼ÑÐ] 11408 325·Ö +3 jgtxuxgkx 2026-04-07 3/150 2026-04-07 23:10 by lbsjt
[¿¼ÑÐ] ר˶085403£¬291·Ö£¬ÓÐÁ½Æª×¨Àû£¬Ò»¹úÒ»½± +3 ¹þ¼ªßä¹þ¼ªßä 2026-04-07 3/150 2026-04-07 18:21 by À¶ÔÆË¼Óê
[¿¼ÑÐ] 307Çóµ÷¼Á +3 Youth@@ 2026-04-07 3/150 2026-04-07 09:25 by СºÚ²»ÅÂÄÑ
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û