以下是引用gentleseven在2008-6-24 15:46:00的发言：
< >tea is an acid, if you heat it, this would probably make a good condition to do some reactions with your product.

< >or maybe the contration give you an impression which those dark residues look less colourful when they were diluted.

以下是引用gentleseven在2008-6-24 22:04:00的发言：
< >i am so so so

< >sorry.

< >i never know tea is a base,

< >why tfa is a strong acid while tea a base, i am confused.

< >sorry

以下是引用gentleseven在2008-6-24 22:04:00的发言：
< >i am so so so

< >sorry.

< >i never know tea is a base,

< >why tfa is a strong acid while tea a base, i am confused.

< >sorry