²é¿´: 945  |  »Ø¸´: 5

zcx215

Òø³æ (СÓÐÃûÆø)

[ÇóÖú] ¾ÛLÈéËá×îÔçÓÉË­ºÏ³ÉµÄ

ÇóÖú£¡  ¾ÛLÈéËá×îÔçÓÉË­ºÏ³ÉµÄ¼°Ïà¹ØÎÄÏ×£¿
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:

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

lynne619

ľ³æ (ÖøÃûдÊÖ)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
mwyuer: ½ð±Ò+1, ¸Ðл»ØÌû½»Á÷ 2012-04-16 16:44:56
¡±¶ÔÓÚ¾ÛÈéËáµÄÑо¿×îÔçÊÇÔÚ1932Äê£¬Õæ¿ÕÌõ¼þϼÓÈÈÈéËáµÃµ½Á˵ͷÖ×ÓÁ¿µÄ¾ÛÈéËᣬµ«ÒòÆäδÄܽøÒ»²½Ìá¸ß·Ö×ÓÁ¿¶ø·ÅÆúÁ˶ԾÛÈéËáÏËάµÄÑо¿.1954Ä꣬DUPont¹«Ë¾²ÉÓÃеľۺϷ½·¨ÖƱ¸³öÁ˸߷Ö×ÓÁ¿µÄ¾ÛÈéËá¡£¡°

ûÓÐÎÄÏ×£¬sorry¡£
2Â¥2012-04-16 15:01:40
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

zoujie

Ìú¸Ëľ³æ (Ö°Òµ×÷¼Ò)

¡ï
mwyuer: ½ð±Ò+1, ¸Ðл»ØÌû½»Á÷ 2012-05-28 18:24:30
ÒýÓûØÌû:
2Â¥: Originally posted by lynne619 at 2012-04-16 15:01:40:
¡±¶ÔÓÚ¾ÛÈéËáµÄÑо¿×îÔçÊÇÔÚ1932Äê£¬Õæ¿ÕÌõ¼þϼÓÈÈÈéËáµÃµ½Á˵ͷÖ×ÓÁ¿µÄ¾ÛÈéËᣬµ«ÒòÆäδÄܽøÒ»²½Ìá¸ß·Ö×ÓÁ¿¶ø·ÅÆúÁ˶ԾÛÈéËáÏËάµÄÑо¿.1954Ä꣬DUPont¹«Ë¾²ÉÓÃеľۺϷ½·¨ÖƱ¸³öÁ˸߷Ö×ÓÁ¿µÄ¾ÛÈéËá¡£¡°

û ...

Õâ¸öMMÁ˽âµÄ»¹ÊÇÂù¶àµÄ
ÔÚÉúÎï²ÄÁϰå¿é×ÊÔ´ÌûÀïÃæÓÐÒ»±¾¹ØÓÚ¾ÛÈéËáºÏ³ÉÓëÓ¦ÓõÄÓ¢ÎÄÊ飬ÉÏÃæÓ¦¸ÃÓÐÏà¹Ø½éÉÜ£¬Äã¿ÉÒÔÈ¥ÏÂÔØ¿´Ò»Ï£¬ÎÒÕâ±ßµÄÕÒ²»µ½ÁË
3Â¥2012-04-16 21:51:16
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

xxzcf

Ìú¸Ëľ³æ (СÓÐÃûÆø)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
mwyuer: ½ð±Ò+1, ¸Ðл»ØÌû½»Á÷ 2012-04-17 08:50:09
Polylactic acid is not a new material. It has been around for decades. In 1932, Wallace Carothers, a scientist for Dupont, produced a low molecular
weight product by heating lactic acid under a vacuum. In 1954, after further refinements, Dupont patented Carothers' process (Lunt, James and Shafer, Andrew. "Polylactic Acid Polymers from Corn: Potential Applications in the Textiles Industry." Internet. Available (April 2002) http://www.cdpoly.com/pdf/lunttech.pdf)
4Â¥2012-04-16 22:34:46
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

zcx215

Òø³æ (СÓÐÃûÆø)

Ë­ÓÐ19Ëļ¸Äê»òÎ弸ÄêµÄ¾ÛLÈéËáµÄÎÄÏ××ÊÁÏ£¡
5Â¥2012-05-17 08:32:17
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

zcx215

Òø³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
4Â¥: Originally posted by xxzcf at 2012-04-16 22:34:46
Polylactic acid is not a new material. It has been around for decades. In 1932, Wallace Carothers, a scientist for Dupont, produced a low molecular
weight product by heating lactic acid under a vacu ...

лл£¬Äã¸øµÄÁ´½Ó´ò²»¿ªÑ½£¬ÄãÓÐ1933-1966ÄêÖ®¼äµÄ¾ÛLÈéËᣨPLLA£©ÎÄÏ××ÊÁÏÖÐÂ𣿼±Òª£¬ÈçÓУ¬Çë·Ö·ÖÏíһϣ¬·Ç³£¸Ðл£¡
6Â¥2012-05-28 14:37:21
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ zcx215 µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] Áº³ÉΰÀÏʦ¿ÎÌâ×é»¶Ó­ÄãµÄ¼ÓÈë +9 һѼѼӴ 2026-03-14 11/550 2026-03-19 17:22 by £¡±¾°µÒ»´Î£¡
[¿¼ÑÐ] ¡¾¿¼Ñе÷¼Á¡¿»¯Ñ§×¨Òµ 281·Ö£¬Ò»Ö¾Ô¸ËÄ´¨´óѧ£¬³ÏÐÄÇóµ÷¼Á +5 ³Ô³Ô³Ô²ÅÓÐÒâÒå 2026-03-19 5/250 2026-03-19 16:18 by 30660438
[¿¼ÑÐ] 324·Ö 085600²ÄÁÏ»¯¹¤Çóµ÷¼Á +3 llllkkkhh 2026-03-18 3/150 2026-03-19 14:22 by houyaoxu
[¿¼ÑÐ] 0703»¯Ñ§µ÷¼Á +5 pupcoco 2026-03-17 8/400 2026-03-19 13:58 by houyaoxu
[¿¼ÑÐ] Ò»Ö¾Ô¸¸£´ó288Óлú»¯Ñ§£¬Çóµ÷¼Á +3 Сľ³æ200408204 2026-03-18 3/150 2026-03-19 13:31 by houyaoxu
[¿¼ÑÐ] 328Çóµ÷¼Á£¬Ó¢ÓïÁù¼¶551£¬ÓпÆÑо­Àú +4 ÉúÎ﹤³Ìµ÷¼Á 2026-03-16 12/600 2026-03-19 11:10 by ÉúÎ﹤³Ìµ÷¼Á
[½Ìʦ֮¼Ò] ½¹ÂÇ +9 Ë®±ùÔÂÔÂÒ°Íà 2026-03-13 13/650 2026-03-19 09:50 by otani
[¿¼ÑÐ] 274Çóµ÷¼Á +6 S.H1 2026-03-18 6/300 2026-03-19 09:34 by »¨µêÏà¼û
[¿¼ÑÐ] 0703»¯Ñ§µ÷¼Á +8 ÄÝÄÝninicgb 2026-03-15 12/600 2026-03-19 05:55 by anny19840123
[¿¼ÑÐ] 288Çóµ÷¼Á£¬Ò»Ö¾Ô¸»ªÄÏÀí¹¤´óѧ071005 +4 ioodiiij 2026-03-17 4/200 2026-03-18 12:36 by Linda Hu
[¿¼ÑÐ] 0703»¯Ñ§Çóµ÷¼Á ×Ü·Ö331 +3 ZY-05 2026-03-13 3/150 2026-03-18 10:58 by macy2011
[¿¼ÑÐ] ÉúÎïѧ071000 329·ÖÇóµ÷¼Á +3 ÎÒ°®ÉúÎïÉúÎﰮΠ2026-03-17 3/150 2026-03-18 10:12 by macy2011
[¿¼ÑÐ] 0703»¯Ñ§336·ÖÇóµ÷¼Á +6 zbzihdhd 2026-03-15 7/350 2026-03-18 09:53 by zhukairuo
[¿¼ÑÐ] 301Çóµ÷¼Á +9 yyÒªÉϰ¶Ñ½ 2026-03-17 9/450 2026-03-18 08:58 by Î޼ʵIJÝÔ­
[¿¼ÑÐ] 275Çóµ÷¼Á +4 Ì«Ñô»¨ÌìÌ쿪ÐÄ 2026-03-16 4/200 2026-03-17 10:53 by ¹¦·ò·è¿ñ
[¿¼ÑÐ] 11408 Ò»Ö¾Ô¸Î÷µç£¬277·ÖÇóµ÷¼Á +3 zhouzhen654 2026-03-16 3/150 2026-03-17 07:03 by laoshidan
[¿¼ÑÐ] ҩѧ383 Çóµ÷¼Á +3 ҩѧchy 2026-03-15 4/200 2026-03-16 20:51 by Ôª×Ó^0^
[¿¼ÑÐ] 0856Çóµ÷¼Á +3 ÁõÃÎ΢ 2026-03-15 3/150 2026-03-16 10:00 by houyaoxu
[¿¼ÑÐ] ²ÄÁÏÓ뻯¹¤ 323 Ó¢Ò»+Êý¶þ+Îﻯ£¬Ò»Ö¾Ô¸£º¹þ¹¤´ó ±¾È˱¾¿ÆË«Ò»Á÷ +4 ×ÔÓɵÄ_·ÉÏè 2026-03-13 5/250 2026-03-14 19:39 by hmn_wj
[¿¼ÑÐ] 297Çóµ÷¼Á +4 ѧº£Æ¯²´ 2026-03-13 4/200 2026-03-14 11:51 by ÈÈÇéɳĮ
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û