改造时将分酸装置由分酸槽挂爪式改为管式分酸器，有效地延长了干吸塔的寿命。
After changing the suspension acid distributing tank into tube acid distributor, service life of the drying and absorption towers has been extended effectively.
对铝及铝合金在磺基水杨酸槽液中及另一有机酸槽中进行二次氧化，获得了装饰效果良好的瓷质氧化膜。
Aluminum and its alloy with decorate ceramic oxide coating were developed by secondary oxidation process in sulfa-salicylic acid bath and an organic acid bath.
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