±±¾©Ê¯ÓÍ»¯¹¤Ñ§Ôº2026ÄêÑо¿ÉúÕÐÉú½ÓÊÕµ÷¼Á¹«¸æ
²é¿´: 760  |  »Ø¸´: 8
µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû

sjmsxmhl

ľ³æ (ÖøÃûдÊÖ)

[ÇóÖú] Éó¸åÒâ¼ûÇóÖú

ͶÁËһƪӢÎÄÎÄÕÂEditor¡¯s commentsÓÐÏÂÁÐÕâôһÌõ£¬²»ÖªµÀʲôÒâ˼£¬ÇëÇó°ïÖú

1) [p. 2, l. 6-8 from the bottom] What percent does each element? (m)

ÎÒµÄÎÄÕÂÖÐÕâÈýÐзֱðÊÇNaCl, KCl (99.5%each£¬Tianjin Beifang Medical Chemical Reagent Factory, China)£¬NaF (98.0%, Chemical Reagent Factory, China) and SiO2 (99.0%, Tianjin Chemical the Third Reagent Factory, China)

¾ÍÊÇ»¯Ñ§Ò©Æ·µÄ´¿¶ÈÒÔ¼°Éú²ú³§¼Ò
±à¼­ÊÇʲôÒâË¼ÄØ£¿
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:

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

mlanqiang

ľ³æÖ®Íõ (ÎÄѧ̩¶·)

À¶²©Ê¿

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
Ó¦¸ÃÊÇÿÖÖÔªËØµÄº¬Á¿¡£
À¶¾«Áé
9Â¥2013-01-21 21:40:10
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 9 ¸ö»Ø´ð

nono2009

³¬¼¶°æÖ÷ (ÎÄѧ̩¶·)

No gains, no pains.

ÓÅÐãÇø³¤ÓÅÐãÇø³¤ÓÅÐãÇø³¤ÓÅÐãÇø³¤ÓÅÐã°æÖ÷

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
sjmsxmhl: ½ð±Ò+1, ²»Ì«Ã÷°× 2013-01-21 21:03:07
¿ÉÄÜÊÇÎÊÄãÕâЩ%´ú±íÁËʲôÒâ˼¡£
2Â¥2013-01-21 12:01:41
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

paperhunter

ÈÙÓþ°æÖ÷ (ÎÄѧ̩¶·)

»¹Ã»ÏëºÃ

ÓÅÐã°æÖ÷ÓÅÐã°æÖ÷ÓÅÐã°æÖ÷ÓÅÐã°æÖ÷ÓÅÐã°æÖ÷ÓÅÐã°æÖ÷ÓÅÐã°æÖ÷

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
sjmsxmhl: ½ð±Ò+2, ÎÒÒ²ÕâôÈÏΪ£¬¿ÉÊDz»ÖªµÀÈçºÎ»Ø´ð°¡ 2013-01-21 20:58:41
sjmsxmhl: ½ð±Ò+1, ºÃÏñ²»ÊÇ £¬ лл 2013-01-21 20:59:33
What percent does each element? (m)
¾Í×ÖÃæÒâ˼¶øÑÔ£¬Éó¸åÈËÃ²ËÆÎʵÄÿÖÖÔªËØµÄÖÊÁ¿°Ù·Ö±È
ÔÛÒ²ÊÇÓÐ×éÖ¯µÄÈËÁË...
3Â¥2013-01-21 12:46:33
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

liujunhero

гæ (ÎÄѧ̩¶·)

ÎÄÏ׽ܳö¹±Ï×ÎÄÏ׽ܳö¹±Ï×

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
sjmsxmhl: ½ð±Ò+1, ¿ÉÄܲ»ÊÇ£¬Ð»Ð» 2013-01-21 20:59:53
¾ÍÊǰٷÖÊýµÄ¾ßÌ嵥λÊÇʲô£¬Èçm/m£¬v/vµÈ
4Â¥2013-01-21 13:11:55
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 328Çóµ÷¼Á +4 ÅôÅôÅöàØàØ 2026-03-24 4/200 2026-03-31 14:34 by ¼Çʱ¾2026
[¿¼ÑÐ] 315Çóµ÷¼Á +5 akie... 2026-03-28 6/300 2026-03-31 12:03 by ±±·çÖ®Éñ.
[¿¼ÑÐ] Ò»Ö¾Ô¸Õã½­´óѧ¹¤¿Æ¶¯Á¦¹¤³Ì370,ÊýÒ»121,רҵ¿Î135£¬ÏÖÔÚÄÜÈ¥ÄÄÀï +3 080700µ÷¼Á 2026-03-30 4/200 2026-03-31 12:00 by KLMY666
[¿¼ÑÐ] 266Çóµ÷¼Á +3 ÍÛºôºßºôºß 2026-03-29 3/150 2026-03-31 10:06 by cal0306
[¿¼ÑÐ] 282Çóµ÷¼Á +3 ºôÎü¶¼ÊǼõ·Ê 2026-03-31 3/150 2026-03-31 10:00 by wangjy2002
[¿¼ÑÐ] Ò»Ö¾Ô¸Äϲý´óѧ324Çóµ÷¼Á +9 hanamiko 2026-03-27 9/450 2026-03-30 20:10 by Î޼ʵIJÝÔ­
[¿¼ÑÐ] 295²ÄÁϹ¤³Ìר˶Çóµ÷¼Á +10 1428151015 2026-03-27 10/500 2026-03-30 19:00 by Ô´_2020
[¿¼ÑÐ] Çóµ÷¼Á +7 Çà´º²ÃΪÈý½Ø 2026-03-29 7/350 2026-03-30 13:14 by laoshidan
[¿¼ÑÐ] 296Çóµ÷¼Á +10 ±Ë°¶t 2026-03-29 10/500 2026-03-30 10:50 by ̽123
[¿¼ÑÐ] 290Çóµ÷¼Á +3 dfffsar 2026-03-29 3/150 2026-03-29 22:38 by ëë밢Ī2
[¿¼ÑÐ] 356Çóµ÷¼Á +3 gysy?s?a 2026-03-28 3/150 2026-03-29 00:33 by 544594351
[¿¼ÑÐ] 286Çóµ÷¼Á +12 PolarBear11 2026-03-26 12/600 2026-03-28 12:14 by zllcz
[¿¼ÑÐ] 081200-314 +3 LILIQQ 2026-03-27 4/200 2026-03-28 09:41 by ±£»¤µØÇòÄãÎÒ×öÆ
[¿¼ÑÐ] 315·ÖÇóµ÷¼Á +7 26¿¼ÑÐÉϰ¶°æ26 2026-03-26 7/350 2026-03-28 04:05 by fmesaito
[¿¼ÑÐ] Çóµ÷¼Á +4 Áã°Ë# 2026-03-27 4/200 2026-03-27 18:07 by yu221
[¿¼ÑÐ] 085601 ²ÄÁϹ¤³Ì 313·Ö Çóµ÷¼Á +5 Ong3 2026-03-27 5/250 2026-03-27 12:24 by goldfish51
[¿¼ÑÐ] 298µ÷¼Á +3 jiyingjie123 2026-03-27 3/150 2026-03-27 11:57 by wxiongid
[¿¼ÑÐ] 292Çóµ÷¼Á +4 ÇóÇóÁËÊÕÏÂÎÒ°É£ 2026-03-26 4/200 2026-03-27 10:37 by zhshch
[¿¼ÑÐ] µ÷¼ÁÇóÊÕÁô +7 ¹ûÈ»ÓÐÎÒ 2026-03-26 7/350 2026-03-27 00:26 by wxiongid
[¿¼ÑÐ] 336²ÄÁÏÇóµ÷¼Á +7 ³ÂäÞÓ¨ 2026-03-26 9/450 2026-03-27 00:20 by wxiongid
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û