But it is easy to aging in the air, the heat variable viscosity, easy expansion in mineral oil or gasoline and dissolved, but not resistant to acid alkali.
但在空气中易老化，遇热变黏，在矿物油或汽油中易膨胀和溶解，耐碱但不耐强酸。
The surface reaction kinetics experiments showed that the variable-viscosity acid had a faster reaction rate.
反应动力学实验研究表明，变黏酸具有很高的表面反应速率。
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