²é¿´: 854  |  »Ø¸´: 3
µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû

Á÷Ã¥ÍÃ1987

½ð³æ (СÓÐÃûÆø)

[ÇóÖú] ¾§ÌåÂÝÐýÁ´µÄÃèÊö

The width of the helix is calculated to be 21.6 Å and the pitch is 19.7 Å
ÇëÎÊÂÝÐýÁ´µÄwidth ºÍ pitch ÊÇÔõô¼ÆËãµÄ£¿
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:

ËÜÔìÇ¿´óµÄ×Ô¼º£¬²»¶ÏÍ»ÆÆ¡£¡£¡£
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

csl200

Òø³æ (ÕýʽдÊÖ)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï
drg1984(½ð±Ò+1): лл»ØÌû£¡ 2011-07-30 14:07:47
Á÷Ã¥ÍÃ1987(½ð±Ò+5): 2011-08-14 21:49:20
widthÓ¦¸ÃÊÇÂÝÐýÐýתһÖܵÄÖ±¾¶£¬¶øpitch±íʾÂݾ࣬ÈçO1ÐýתһÖÜÆÚ£¬±ä³ÉÁËO1¡¯£¬ÄÇôO1O¡¯¾ÍÊÇpitch¡£
3Â¥2011-07-27 09:49:07
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 4 ¸ö»Ø´ð

hjh509

Ìú¸Ëľ³æ (Ö°Òµ×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï
Á÷Ã¥ÍÃ1987(½ð±Ò+3): ºÃµÄ°¡ ÖªµÀÀ² thank you 2011-07-24 10:05:45
drg1984(½ð±Ò+1): ¸Ðл»ØÌû½»Á÷£¡ 2011-07-24 11:37:22
²»ÊǼÆËãµÄ£¬ÊÇÖ±½ÓÔÚͼÉÏÁ¿³öÀ´µÄ
111
2Â¥2011-07-24 10:01:21
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

Á÷Ã¥ÍÃ1987

½ð³æ (СÓÐÃûÆø)

lijunjie84: »ØÌûÖö¥ 2011-12-05 14:29:42
ÒýÓûØÌû:
3Â¥: Originally posted by csl200 at 2011-07-27 09:49:07:
widthÓ¦¸ÃÊÇÂÝÐýÐýתһÖܵÄÖ±¾¶£¬¶øpitch±íʾÂݾ࣬ÈçO1ÐýתһÖÜÆÚ£¬±ä³ÉÁËO1¡¯£¬ÄÇôO1O¡¯¾ÍÊÇpitch¡£

ÓÖÓöµ½ÁËÂÝÐýµÄÎÊÌ⣬Âé·³¸ßÊÖ¾ßÌåÖ¸µãһϠ¸½¼þÖеÄpitchºÍwidthµ½µ×ÊÇÕ¦Á¿³öÀ´µÄ°¡£¬²»Ê¤¸Ð¼¤£¡
ËÜÔìÇ¿´óµÄ×Ô¼º£¬²»¶ÏÍ»ÆÆ¡£¡£¡£
4Â¥2011-12-05 10:00:48
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 085600²ÄÁÏÓ뻯¹¤µ÷¼Á 324·Ö +9 llllkkkhh 2026-03-18 9/450 2026-03-19 07:40 by BruceLiu320
[¿¼ÑÐ] 321Çóµ÷¼Á +3 ºÎÈó²É123 2026-03-18 3/150 2026-03-18 21:27 by li123456789.
[¿¼ÑÐ] 344Çóµ÷¼Á +6 knight344 2026-03-16 7/350 2026-03-18 20:13 by walc
[¿¼ÑÐ] Ò»Ö¾Ô¸ÎäÀí²ÄÁÏ305·ÖÇóµ÷¼Á +5 ÏëÉϰ¶µÄÀðÓã 2026-03-18 6/300 2026-03-18 17:53 by Î޼ʵIJÝÔ­
[¿¼ÑÐ] 314Çóµ÷¼Á +8 ÎÞи¿É»÷µÄ¾ÞÈË 2026-03-12 8/400 2026-03-18 14:50 by haxia
[¿¼ÑÐ] 085601²ÄÁϹ¤³Ìר˶Çóµ÷¼Á +6 Ľº®mio 2026-03-16 6/300 2026-03-18 14:26 by 007_lilei
[¿¼ÑÐ] »·¾³¹¤³Ìµ÷¼Á +8 ´ó¿Édigkids 2026-03-16 8/400 2026-03-18 09:36 by zhukairuo
[¿¼ÑÐ] 334Çóµ÷¼Á +3 Ö¾´æ¸ßÔ¶ÒâÔÚ»úÐ 2026-03-16 3/150 2026-03-18 08:34 by lm4875102
[¿¼ÑÐ] ¿¼ÑÐÇóµ÷¼Á +3 éÙËÌ. 2026-03-17 4/200 2026-03-17 21:43 by ÓÐÖ»ÀêÅ«
[¿¼ÑÐ] 277µ÷¼Á +5 ×ÔÓɼå±ý¹û×Ó 2026-03-16 6/300 2026-03-17 19:26 by Àîleezz
[¿¼ÑÐ] ÖпÆÔº²ÄÁÏ273Çóµ÷¼Á +4 yzydy 2026-03-15 4/200 2026-03-16 15:59 by Gaodh_82
[¿¼ÑÐ] 070303 ×Ü·Ö349Çóµ÷¼Á +3 LJY9966 2026-03-15 5/250 2026-03-16 14:24 by xwxstudy
[¿¼ÑÐ] 26¿¼ÑÐÒ»Ö¾Ô¸ÖйúʯÓÍ´óѧ(»ª¶«)305·ÖÇóµ÷¼Á +3 ¼ÎÄêÐÂ³Ì 2026-03-15 3/150 2026-03-15 13:58 by ¹þ¹þ¹þ¹þºÙºÙºÙ
[¿¼ÑÐ] 085601²ÄÁϹ¤³Ì315·ÖÇóµ÷¼Á +3 yang_0104 2026-03-15 3/150 2026-03-15 10:58 by peike
[¿¼ÑÐ] 080500£¬²ÄÁÏѧ˶302·ÖÇóµ÷¼ÁѧУ +4 ³õʶ¿ÉÀÖ 2026-03-14 5/250 2026-03-14 21:08 by peike
[¿¼ÑÐ] Çó²ÄÁϵ÷¼Á 085600Ó¢Ò»Êý¶þ×Ü·Ö302 ǰÈý¿Æ235 ¾«Í¨»úÆ÷ѧϰ Ò»Ö¾Ô¸¹þ¹¤´ó +4 ÁÖyaxin 2026-03-12 4/200 2026-03-13 22:04 by ÐÇ¿ÕÐÇÔÂ
[¿¼ÑÐ] ¹¤¿Æ278·ÖÇóµ÷¼Á +5 ÖÜÂýÈȰ¡ 2026-03-12 7/350 2026-03-13 15:49 by JourneyLucky
[¿¼ÑÐ] һ־Ըɽ´ó07»¯Ñ§ 332·Ö ËÄÁù¼¶Òѹý ±¾¿ÆÉ½¶«Ë«·Ç Çóµ÷¼Á£¡ +3 ²»ÏëÀíÄã 2026-03-12 3/150 2026-03-13 14:18 by JourneyLucky
[¿¼ÑÐ] 290Çóµ÷¼Á +3 ADT 2026-03-13 3/150 2026-03-13 10:19 by peike
[¿¼²©] ¸£ÖÝ´óѧÑî»ÆºÆ¿ÎÌâ×éÕÐÊÕ2026Äêרҵѧλ²©Ê¿Ñо¿Éú£¬2026.03.20½ØÖ¹ +3 Xiangyu_ou 2026-03-12 3/150 2026-03-13 09:36 by duanwu655
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û