Znn3bq.jpeg
²é¿´: 785  |  »Ø¸´: 5
µ±Ç°Ö÷ÌâÒѾ­´æµµ¡£

yangyou007

[½»Á÷] ¡¾ÇóÖú¡¿ÇëÎÊÕâ¾ä»°Ôõô·­Ò룿

Wash the column£¨É«Æ×Öù£© (with the tap completely open) with carbon dioxide-free water until neutral to blue litmus paper .
ÇëÎÊÉÏÃæÕâ¾ä»°Ôõô·­Ò룬×îºóµÄµÄ¡°until neutral to blue litmus paper ¡±Ôõô·­Ò룿
Çë´ó¼Ò¶à¶àÖ¸½ÌÀ²
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

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

yangjianchun

ľ³æ (ÖøÃûдÊÖ)

¡ï ¡ï
Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû½»Á÷
opq691(½ð±Ò+1):¸Ðл²ÎÓëÌÖÂÛ£¬»¶Ó­³£À´·ÖÎö°æ
ÖкÍÖ±µ½À¶É«Ê¯ÈïÊÔÖ½³ÊÖÐÐÔ
Ô½°Ñʵ±ÊÂÔ½ÊÇÊ£¡
2Â¥2009-06-21 08:34:11
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

naren4545

ľ³æ (ÕýʽдÊÖ)

¡ï
opq691(½ð±Ò+1):¸Ðл²ÎÓëÌÖÂÛ£¬»¶Ó­³£À´·ÖÎö°æ
ʯÈïÊÔÖ½ÏÔÖÐÐÔ£¡
3Â¥2009-06-21 08:35:26
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

yjywei

ľ³æ (ÖøÃûдÊÖ)

¡ï
Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû½»Á÷
Ö±µ½À¶É«Ê¯ÈïÊÔÖ½³ÊÖÐÐÔ

ÎÒÊÇÕâôÈÏΪµÄ£¡
4Â¥2009-06-21 11:45:42
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ÒùµÑÊéÉú

µ½Ê¯ÈïÏÔÖÐÐÔ
5Â¥2009-06-21 11:58:08
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

snowwolf6810

½ð³æ (ÕýʽдÊÖ)

¡ï
Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû½»Á÷
ÒýÓûØÌû:
Originally posted by naren4545 at 2009-6-21 08:35:
ʯÈïÊÔÖ½ÏÔÖÐÐÔ£¡

ͬÒâ
Ñ©ÀÇÒ»ÑùµØÉú»î
6Â¥2009-06-21 18:47:43
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ yangyou007 µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 0854Çóµ÷¼Á +22 ÃÅ·ÃþÃþ 2026-04-15 26/1300 2026-04-18 23:30 by ·²¡Çé
[¿¼ÑÐ] 320Çóµ÷¼Á +5 Éî½¼akm 2026-04-17 5/250 2026-04-18 19:52 by Íõ¬Bè±
[¿¼ÑÐ] 297£¬¹¤¿Æµ÷¼Á? +5 ºÓÄÏũҵ´óѧ-ÄÜ 2026-04-14 5/250 2026-04-18 15:17 by Equinoxhua
[¿¼ÑÐ] 260Çóµ÷¼Á +4 Zyt1314520.. 2026-04-17 5/250 2026-04-18 08:28 by babysonlkd
[¿¼²©] É격/¿¼²© +3 ¿ÐÃæ°üµÄСÊ鳿 2026-04-17 4/200 2026-04-17 23:54 by ÑôÑôÑô^_^
[¿¼ÑÐ] 297£¬¹¤¿Æµ÷¼Á?ºÓÄÏũҵ´óѧ±¾¿Æ +14 ºÓÄÏũҵ´óѧ-ÄÜ 2026-04-14 14/700 2026-04-16 14:41 by dingyanbo1
[»ù½ðÉêÇë] RY£ºÖйú²ú³öµÄ¿ÆÑ§À¬»øÂÛÎÄ£¬¾ø¶ÔÊýÁ¿ºÍ±ÈÀý¶¼ÊÀ½çµÚÒ» +7 zju2000 2026-04-14 18/900 2026-04-16 11:36 by »¶ÀÖËÌÒ¶Ýè
[¿¼ÑÐ] 322Çóµ÷¼Á +8 123°²¿µ 2026-04-12 15/750 2026-04-16 11:07 by Espannnnnol
[¿¼ÑÐ] Çóµ÷¼ÁÍÆ¼ö +8 СÄô°®Ñ§Ï° 2026-04-14 8/400 2026-04-16 07:22 by ѧԱJpLReM
[¿¼ÑÐ] Çóµ÷¼Á +12 ºÎÆøÕý 2026-04-13 13/650 2026-04-14 14:47 by zs92450
[¿¼ÑÐ] ʳƷÓëÓªÑø£¨0955£©271Çóµ÷¼Á +15 Éý¸ñ°¢´ï 2026-04-12 16/800 2026-04-14 13:18 by ¸¡Èô_°²Éú
[¿¼ÑÐ] 085408¹âµçÐÅÏ¢¹¤³Ìר˶355Ò»Ö¾Ô¸³¤´º¹â»úËùµ÷¼Á +6 Íõymaa 2026-04-13 13/650 2026-04-14 11:33 by Íõymaa
[¿¼ÑÐ] Çóµ÷¼Á +3 ÎÒ°®¸ßÊý¸ßÊý°®Î 2026-04-12 3/150 2026-04-14 01:00 by Íõ¬Bè±
[¿¼ÑÐ] ¿¼ÑÐÓ¢Ò»ÊýÒ»338·Ö +9 ³¤½­´óѧ¶«Ð£Çø 2026-04-13 10/500 2026-04-14 00:41 by Íõ¬Bè±
[¿¼ÑÐ] 2026˶ʿµ÷¼Á_Äܶ¯_ºÓÄÏũҵ´óѧ +4 ºÓÄÏũҵ´óѧ-ÄÜ 2026-04-12 4/200 2026-04-13 22:01 by bljnqdcc
[¿¼ÑÐ] Ò»Ö¾Ô¸ÖÐÄÏ´óѧ 0855 »úе 286 Çóµ÷¼Á +11 ²»»á³ÔÈâ 2026-04-12 11/550 2026-04-13 21:59 by bljnqdcc
[¿¼ÑÐ] 339Çóµ÷¼Á +4 hanwudada 2026-04-12 4/200 2026-04-13 12:03 by À¶ÔÆË¼Óê
[¿¼ÑÐ] ¡£ +10 Àî¶àÃ×lee. 2026-04-12 11/550 2026-04-12 22:58 by yuyin1233
[¿¼ÑÐ] 346·Ö£¬¹¤¿Æ0854Çóµ÷¼Á£¬×¨Ë¶ +6 moser233 2026-04-12 7/350 2026-04-12 22:11 by fqwang
[¿¼ÑÐ] µ÷¼Á½áÊø +6 floriea 2026-04-12 8/400 2026-04-12 18:13 by zhouxiaoyu
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û