±±¾©Ê¯ÓÍ»¯¹¤Ñ§Ôº2026ÄêÑо¿ÉúÕÐÉú½ÓÊÕµ÷¼Á¹«¸æ
²é¿´: 1127  |  »Ø¸´: 12
µ±Ç°Ö÷ÌâÒѾ­´æµµ¡£

achao6918

½ð³æ (ÕýʽдÊÖ)

[½»Á÷] ¡¾×ÊÔ´¡¿k-¦ÅÄ£ÐÍÖÐkºÍ¦ÅµÄ¾­Ñ鼯ËãÆ÷

ÏÂÔØµØÖ·£º http://d.namipan.com/d/109e0fa0d ... c923a5cb1d02a3e0700
Èí¼þ˵Ã÷£ºÍÄÁ÷k-¦Å¾­ÑéÖµ¼ÆËãÆ÷£¬µ¥Î»¾ù²ÉÓÃSIµ¥Î»ÖÆ¡£
Èí¼þ½ØÍ¼£º¼û¸½¼þ

[ Last edited by nono2009 on 2009-12-13 at 17:13 ]
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

[url=http://t.sina.com.cn/1643168030?s=6uyXnP][img]http://service.t.sina.com.cn/widget/qmd/1643168030/aa33ff64/1.png[/img][/url]
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

tacaro

ÖÁ×ðľ³æ (ÖªÃû×÷¼Ò)

Сľ³æ´óÄÜèÆïʿѫÕÂ

¡ï ¡ï
Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû½»Á÷
kuhailangyu(½ð±Ò+1,VIP+0):¾Ù±¨Óн±£¬ºÇºÇ 7-15 16:48
2Â¥2009-07-15 12:18:03
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ÏÄÖ®Àº

ľ³æ (ÕýʽдÊÖ)

ÓÐÒ»¸öÎÊÌ⣬¾­ÎÒÊÔÑéÈÏΪ£ºÆäÖеÄÍÄÁ÷ºÄÉ¢ÂÊe²»¶Ô£¡
ÆäËûµÄÈý¸ö¶ÔµÄ£¬ÄãÃÇÈÏÎªÄØ£¿
3Â¥2009-08-02 17:34:35
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

tacaro

ÖÁ×ðľ³æ (ÖªÃû×÷¼Ò)

Сľ³æ´óÄÜèÆïʿѫÕÂ

¡ï
Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû½»Á÷
ÒýÓûØÌû:
Originally posted by ÏÄÖ®Àº at 2009-8-2 17:34:
ÓÐÒ»¸öÎÊÌ⣬¾­ÎÒÊÔÑéÈÏΪ£ºÆäÖеÄÍÄÁ÷ºÄÉ¢ÂÊe²»¶Ô£¡
ÆäËûµÄÈý¸ö¶ÔµÄ£¬ÄãÃÇÈÏÎªÄØ£¿

û·¢ÏÖ¡­¡­

ºÇºÇ£¬²»ÐÐÕÕ¹«Ê½ËãÏÂ
4Â¥2009-08-03 10:39:43
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

shycumt

Ìú³æ (³õÈëÎÄ̳)

лл£¬Ñ§Ï°
5Â¥2009-12-09 14:29:35
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

achao6918

½ð³æ (ÕýʽдÊÖ)

ÒýÓûØÌû:
Originally posted by ÏÄÖ®Àº at 2009-8-2 17:34:
ÓÐÒ»¸öÎÊÌ⣬¾­ÎÒÊÔÑéÈÏΪ£ºÆäÖеÄÍÄÁ÷ºÄÉ¢ÂÊe²»¶Ô£¡
ÆäËûµÄÈý¸ö¶ÔµÄ£¬ÄãÃÇÈÏÎªÄØ£¿

ÎÊÄãһϣº³ÌÐòÀïÍ·¾ßÌåµÄ¹«Ê½ÊÇÊ²Ã´ÄØ£¿
[url=http://t.sina.com.cn/1643168030?s=6uyXnP][img]http://service.t.sina.com.cn/widget/qmd/1643168030/aa33ff64/1.png[/img][/url]
6Â¥2009-12-13 17:07:01
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

achao6918

½ð³æ (ÕýʽдÊÖ)

ÒýÓûØÌû:
Originally posted by ÏÄÖ®Àº at 2009-8-2 17:34:
ÓÐÒ»¸öÎÊÌ⣬¾­ÎÒÊÔÑéÈÏΪ£ºÆäÖеÄÍÄÁ÷ºÄÉ¢ÂÊe²»¶Ô£¡
ÆäËûµÄÈý¸ö¶ÔµÄ£¬ÄãÃÇÈÏÎªÄØ£¿

ÎÊÄãһϣº³ÌÐòÀïÍ·¾ßÌåµÄ¹«Ê½ÊÇÊ²Ã´ÄØ£¿
[url=http://t.sina.com.cn/1643168030?s=6uyXnP][img]http://service.t.sina.com.cn/widget/qmd/1643168030/aa33ff64/1.png[/img][/url]
7Â¥2009-12-13 17:09:04
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

yhy362514

гæ (СÓÐÃûÆø)

8Â¥2010-01-08 14:59:39
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

47425804

ľ³æ (ÕýʽдÊÖ)


¡ï
Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû½»Á÷
ÒýÓûØÌû:
Originally posted by ÏÄÖ®Àº at 2009-08-02 17:34:35:
ÓÐÒ»¸öÎÊÌ⣬¾­ÎÒÊÔÑéÈÏΪ£ºÆäÖеÄÍÄÁ÷ºÄÉ¢ÂÊe²»¶Ô£¡
ÆäËûµÄÈý¸ö¶ÔµÄ£¬ÄãÃÇÈÏÎªÄØ£¿

ÎÒÒ²¾õµÃËÆºõÓÐÎÊÌ⣬ÏÂÃæÊǼìÑéµÄÊý¾Ý£º
ËÙ¶Èu=10£¬ÌØÕ÷³¤¶ÈΪL=0.1£¬Ô˶¯Õ³¶ÈΪv=1.8e-08 £¨SIµ¥Î»£©
´ËС¹¤¾ßËã³öµÄ½á¹ûΪ£º
k=0.044478....; e=0.015413....; I=0.0172198....; Re=55555556

¶ø¸ù¾Ý¹«Ê½£º
Re=u*L*v=55555556  OK!
I=0.16*Re^-0.125=0.0172198374  OK!
k=1.5*(u*I)^2=0.0444784199  OK!
µ«ÊÇe=C^0.75*k^1.5/(0.07*L)=0.2201952103 (ÆäÖÐC=0.09)

´Ë¹¤¾ßËã³öÀ´µÄ±ÈÎÒÓù«Ê½Ëã³öÀ´µÄСÁËÒ»¸öÊýÁ¿¼¶£¡
ËùÒÔÎÒÒ²¾õµÃ×÷ÕßÖÆ×÷Õâ¸ö¹¤¾ßµÄʱºò¿ÉÄܰѹ«Ê½¸ø´ò´íÁË¡£
²»¹ý»¹ÊǷdz£¸Ðл×÷ÕßµÄÁ¼¿àÓÃÐÄ£¡
9Â¥2010-01-26 23:00:00
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

qxtxdy

Í­³æ (ÕýʽдÊÖ)

¡ï
Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû½»Á÷
ËüÕâÀïµÄÔ˶¯Õ³¶ÈÓ¦¸ÃÊǶ¯Á¦Õ³¶È°É?
10Â¥2010-01-27 19:01:10
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ achao6918 µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] µ÷¼Á +3 osbbx 2026-04-02 3/150 2026-04-03 07:47 by cc8418
[¿¼ÑÐ] Ò»Ö¾Ô¸ÉÂÎ÷ʦ·¶´óѧÉúÎïѧ317·Ö +5 1563ÈÕ¡£ 2026-04-02 5/250 2026-04-03 06:58 by ilovexiaobin
[¿¼ÑÐ] 312 »¯¹¤»òÖÆÒ©µ÷¼Á +7 ССī123 2026-04-02 8/400 2026-04-02 22:15 by ZXlzxl0425
[¿¼ÑÐ] 285Çóµ÷¼Á +8 AZMK 2026-04-02 11/550 2026-04-02 20:16 by yulian1987
[¿¼ÑÐ] 298Çóµ÷¼Á +4 zzz£¬£¬r 2026-04-02 7/350 2026-04-02 18:57 by 1939136013¹·×³
[¿¼ÑÐ] ²ÄÁϹ¤³Ì322·Ö +8 ¹þ¹þ¹þºðºðºð¹þ 2026-04-01 8/400 2026-04-02 11:53 by 3041
[¿¼ÑÐ] Ò»Ö¾Ô¸9³õÊÔ366 ±¾Ë«·ÇÇóµ÷¼Á +4 ÔËÆøÀ´µÃÈôÓÐËÆÎ 2026-04-02 4/200 2026-04-02 09:56 by guanxin1001
[¿¼ÑÐ] ¸÷λÀÏʦºÃ£¬ÎÒµÄһ־ԸΪ±±¾©¿Æ¼¼´óѧ085601²ÄÁÏר˶ +13 Koxui 2026-03-28 13/650 2026-04-02 09:35 by ßÕßÕßÕßÉßÉßÉ
[¿¼ÑÐ] 08¹¤¿Æ275·ÖÇóµ÷¼Á +13 AaAa7420 2026-03-31 13/650 2026-04-02 06:19 by 286640313
[¿¼ÑÐ] ²ÄÁÏ¿ÆÑ§Ó빤³Ì339Çóµ÷¼Á +11 hyz0119 2026-03-31 12/600 2026-04-01 18:40 by ΰ´óºÓ±±
[¿¼ÑÐ] 285Çóµ÷¼Á +5 FZAC123 2026-03-30 5/250 2026-04-01 15:50 by º«Ó꺭
[¿¼ÑÐ] 086000ÉúÎïÓëÒ½Ò© ³õÊÔ274Çóµ÷¼Á +5 С¶£µ±À´ÁË 2026-03-30 6/300 2026-04-01 14:25 by mxj1203
[¿¼ÑÐ] 333Çóµ÷¼Á +4 °¢¿ÆÒÝ 2026-03-31 4/200 2026-04-01 09:11 by jp9609
[»ù½ðÉêÇë] ÃæÉÏ5BÄÜÉÏ»áÂ𣿠+8 redcom 2026-03-29 8/400 2026-03-31 15:53 by niuailing
[¿¼ÑÐ] 085600£¬×¨Òµ¿Î»¯¹¤Ô­Àí£¬320·ÖÇóµ÷¼Á +6 ´ó²öС×Ó 2026-03-29 6/300 2026-03-31 10:03 by ÂÈ»¯ÑÇÏõõ£
[¿¼ÑÐ] 297 µØÀíѧ070500 ¸´ÊÔÇóµ÷¼Á +3 СԲȦȦooo 2026-03-30 3/150 2026-03-30 21:05 by ÓàÕðyz
[¿¼ÑÐ] ²ÄÁÏר˶ 085600Çóµ÷¼Á +7 BBQ233 2026-03-30 7/350 2026-03-30 17:44 by oooqiao
[¿¼ÑÐ] ±¾¿ÆË«·Ç²ÄÁÏ£¬¿ç¿¼Ò»Ö¾Ô¸»ªµç085801µçÆø£¬283Çóµ÷¼Á£¬ÈκÎרҵ¶¼¿ÉÒÔ +6 ֥ʿѩbaoo 2026-03-28 8/400 2026-03-29 08:16 by ËÉ»¨¸×1201
[¿¼ÑÐ] 356Çóµ÷¼Á +3 gysy?s?a 2026-03-28 3/150 2026-03-29 00:33 by 544594351
[¿¼ÑÐ] 283Çóµ÷¼Á +3 A child 2026-03-28 3/150 2026-03-28 15:41 by ms629
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û