Znn3bq.jpeg
±±¾©Ê¯ÓÍ»¯¹¤Ñ§Ôº2026ÄêÑо¿ÉúÕÐÉú½ÓÊÕµ÷¼Á¹«¸æ
²é¿´: 976  |  »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] 305Çóµ÷¼Á +4 77Qi 2026-04-06 4/200 2026-04-07 20:06 by shanqishi
[¿¼ÑÐ] 388Çóµ÷¼Á +5 ËÄ´¨ÍõÌÎ 2026-04-07 7/350 2026-04-07 19:01 by dongzh2009
[¿¼ÑÐ] »¯¹¤Çóµ÷¼Á£¡ +24 RichLi_ 2026-04-06 24/1200 2026-04-07 17:17 by À¶ÔÆË¼Óê
[¿¼ÑÐ] 307·Ö²ÄÁÏרҵÇóµ÷¼Á +9 Hllºú 2026-04-05 9/450 2026-04-07 16:41 by daiee
[¿¼ÑÐ] 081700»¯Ñ§¹¤³ÌÓë¼¼Êõ Ò»Ö¾Ô¸Öк£Ñó 323 Çóµ÷¼ÁѧУ +19 ÅûÐÇºÓ 2026-04-03 19/950 2026-04-07 15:14 by ¾¡Ë´Ò¢1
[¿¼ÑÐ] ³õÊÔ301£¬´úÂë085701»·¾³¹¤³Ì£¬±¾Ë¶Ò»Ö£¬ËÄÁù¼¶Òѹý£¬ÓжþÇøÒ»×÷£¬¹²·¢±í5ƪÂÛÎÄ +11 axibli 2026-04-01 12/600 2026-04-07 11:20 by audery861007
[¿¼ÑÐ] 312Çóµ÷¼Á +4 LR6 2026-04-06 4/200 2026-04-07 08:42 by jp9609
[¿¼ÑÐ] £¨µ÷¼Á£©Ò»Ö¾Ô¸±¨¿¼¹þ¶û±õ¹¤Òµ´óѧ0857×ÊÔ´Óë»·¾³×¨Òµ378·Ö¿¼Éú +7 ºÝºÝ¼ÓÓÍ 2026-04-05 8/400 2026-04-06 16:52 by momoð©
[¿¼ÑÐ] 372·Ö£¬²ÄÁÏÓ뻯¹¤£¬Ò»Ö¾Ô¸ºþÄÏ´óѧ£¬Çóµ÷¼Á +3 À¶¼ãƬ 2026-04-01 3/150 2026-04-06 09:04 by Î޼ʵIJÝÔ­
[¿¼ÑÐ] 294Çóµ÷¼Á +4 Grey_Ey 2026-04-01 5/250 2026-04-05 23:05 by Grey_Ey
[¿¼ÑÐ] Ò»Ö¾Ô¸±±¾©½»Í¨´óѧ²ÄÁϹ¤³Ì×Ü·Ö358Çóµ÷¼Á +4 cs0106 2026-04-04 4/200 2026-04-05 18:46 by imissbao
[¿¼ÑÐ] ¹¤¿Æ277·ÖÇóµ÷¼Á²ÄÁÏ +8 ÉÏÁËÉÏÁËÉÏŶ 2026-04-05 9/450 2026-04-05 13:05 by wwytracy
[¿¼ÑÐ] µ÷¼ÁÇóÖú +10 Ïë»»ÊÖ»ú²»Ïë½âÊ 2026-04-02 13/650 2026-04-05 09:41 by sam3303
[¿¼ÑÐ] 083200 333Çóµ÷¼Á +3 Ê®¶þ£¡£¡ 2026-04-04 3/150 2026-04-05 08:28 by barlinike
[¿¼ÑÐ] Ò»Ö¾Ô¸ÉϺ£´óѧÉúÎïѧ346 +3 ÉϺ£´óѧ346µ÷¼Á 2026-04-03 3/150 2026-04-04 20:20 by dongzh2009
[¿¼ÑÐ] ¿¼Ñе÷¼Á +4 zybz³å³å³å 2026-04-03 6/300 2026-04-04 13:08 by zybz³å³å³å
[¿¼ÑÐ] ²ÄÁϵ÷¼Á +11 ÎâèùÓ±£¡ 2026-04-03 11/550 2026-04-04 09:56 by ССÊ÷2024
[¿¼ÑÐ] ¹¤¿Æ 267Çóµ÷¼Á +5 wanwan00 2026-04-02 7/350 2026-04-03 14:14 by zhangdingwa
[¿¼ÑÐ] 312Çóµ÷¼Á +6 ССī123 2026-04-02 7/350 2026-04-03 07:32 by jsw79
[¿¼ÑÐ] 377Çóµ÷¼Á +3 RASKIN 2026-04-02 3/150 2026-04-02 09:45 by zzchen2000
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û