| ²é¿´: 671 | »Ø¸´: 4 | |||
| µ±Ç°Ö÷ÌâÒѾ´æµµ¡£ | |||
GT.½ð³æ (СÓÐÃûÆø)
|
[½»Á÷]
Çë½Ì£ºNaHµÄÐÔÖÊ
|
||
|
ÇëÎÊÄÇλ´óϺ֪µÀNaHµÄÐÔÖÊ£¬ºÍÔÚÓлúºÏ³ÉÉϵÄÓ¦Óã¿ ÍøÉÏÕâ·½ÃæµÄ×ÊÁÏÌ«ÉÙ¡£Ð»Ð»£¡ [ Last edited by linweiguo0 on 2007-4-16 at 19:36 ] |
» ²ÂÄãϲ»¶
¿ÉÉúÎï½µ½â¾Ûõ¥ÕýÔÚÖØËÜÏÖ´úÒ½ÁÆÆ÷е
ÒѾÓÐ0È˻ظ´
26½ì²©Ê¿ÉêÇë
ÒѾÓÐ4È˻ظ´
Óлú¸ß·Ö×Ó²ÄÁÏÂÛÎÄÈóÉ«/·ÒëÔõôÊÕ·Ñ?
ÒѾÓÐ120È˻ظ´
PLLA ΢ÇòÔÚÉúÎïҽѧÁìÓòµÄÑо¿ÓëÓ¦ÓÃ
ÒѾÓÐ1È˻ظ´
PLLA ΢ÇòµÄ²ÄÁÏÌØÐÔÓëÖÆ±¸¹¤ÒÕ½âÎö
ÒѾÓÐ0È˻ظ´
Ò½ÓþۼºÄÚõ¥£¨PCL£©È«½âÎö£º´ÓÁ½¶Îʽ½µ½âµ½×éÖ¯¹¤³ÌÓ¦ÓÃ
ÒѾÓÐ0È˻ظ´
·´Ïà¹è½ºÈçºÎÔÙÉú£¿
ÒѾÓÐ1È˻ظ´
¹þ¶û±õÀí¹¤´óѧ2026ÄêÑо¿Éúµ÷¼Á£¬²ÄÁÏ¿ÆÑ§Ó뻯ѧ¹¤³ÌѧԺÑо¿Éúµ÷¼Á
ÒѾÓÐ3È˻ظ´
Î人һ±¾¸ßУÕÐÊÕ²ÄÁÏ¡¢»¯Ñ§¡¢¸ß·Ö×Ó¡¢·ÄÖ¯¡¢ÉúÎïÏà¹Ø×¨ÒµË¶Ê¿Éú
ÒѾÓÐ0È˻ظ´
zhangquee
ÖÁ×ðľ³æ (ÎÄ̳¾«Ó¢)
°®»¨²»²É»¨£¬äìÈ÷²»ÂÒÈ÷£¡
- Ó¦Öú: 38 (СѧÉú)
- ¹ó±ö: 4.19
- ½ð±Ò: 29596.7
- É¢½ð: 4948
- ºì»¨: 15
- Ìû×Ó: 14985
- ÔÚÏß: 305.2Сʱ
- ³æºÅ: 87851
- ×¢²á: 2005-08-21
- ÐÔ±ð: GG
¡ï ¡ï
linweiguo0(½ð±Ò+2):thank u
linweiguo0(½ð±Ò+2):thank u
|
Ç¿¼î, pka 35 µÄÑù×Ó ³£ÓÃ60%º¬Á¿µÄ£¬¶àÓÃÀ´°ÎÇ⣬Éú³ÉÑõ¸º£¬Ì¼¸ºÀë×ÓʲôµÄ.ÓöË®¾çÁÒȼÉÕ CCD2004ÉϹØÓÚÕâ¸ö¶«Î÷µÄÄÚÈÝ: Molecular Formula: HNa Molecular Weight: 23.998 Accurate Mass: 23.997592 Percentage Composition: H 4.20%; Na 95.80% General Statement: NaCl struct. Source/Synthesis: Synth. by direct reaction of the elements at elevated temps. Use/Importance: Commercially available as a dispersion in mineral oil or as a solid. Reducing agent in org. chem. Used in synth. of NaBH4 Physical Description: Moisture-sensitive white powder Other Data: Dec. on heating into Na and H2. Reacts violently with H2O NaOH + H2. Hf 56.44 kJ mol1; Gf 33.55 kJ mol1; S 40.0 J K1 mol1 Hazard Toxicity: Can react violently on addn. to H2O, also reacts violently or explosively with a variety of substances. Highly destructive to all tissues |

2Â¥2007-04-16 19:37:40
Ò½Éú
ͳæ (СÓÐÃûÆø)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 165.6
- É¢½ð: 1
- Ìû×Ó: 70
- ÔÚÏß: 5.5Сʱ
- ³æºÅ: 324972
- ×¢²á: 2007-03-17
- ÐÔ±ð: GG
- רҵ: Óлú¼°¹¦ÄܲÄÁÏ
3Â¥2007-04-19 23:16:23
minisung
½ð³æ (ÕýʽдÊÖ)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 733
- É¢½ð: 6
- Ìû×Ó: 578
- ÔÚÏß: 12.1Сʱ
- ³æºÅ: 279434
- ×¢²á: 2006-09-16
- ÐÔ±ð: GG
- רҵ: ÓлúºÏ³É

4Â¥2007-04-21 10:00:35













»Ø¸´´ËÂ¥