Very thanks. I really don't know that before.作者: Nogard 時間: 2006-2-16 11:47 PM
之前聽過... 但....我好似冇理 =..=作者: jac4153 時間: 2006-2-17 12:53 AM
wa, like this one ar, sei lo.....作者: Azuma 時間: 2006-2-17 02:16 AM
Is it calcium carbonate? 3 Z6 B a5 M. [ T3 D2 _3 aif yes ............................ 3 C5 f- _$ p+ \, W5 V( T0 j5 Bwhat is the problem ............? 7 p- d. e9 X5 h$ S1 I4 v/ U( \- b1.你包野都唔知係邊你點攞出黎! f( i% }8 R. Z X' u# s3 Y
2.點解真係諗唔明.............caco3 +h2o > CAhCo3, Q5 {. G. {+ i; Q
都唔係水............ $ Y s8 {% U6 v F4 L8 k, A3.你係屋企開部抽濕機會唔會令室內濕氣增加?