Also can use acid pump cycle cleaning, cleaning time for 12 hours;

也可用酸泵循环清洗，清洗时间为12小时；

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The damaged parts of the acid pump were repaired using laser cladding technology and domestic alloy materials. The acid pump runs well after repair.

后采用激光熔覆技术和国产合金材料对酸泵受损部件进行了修复，修复后酸泵运行良好。

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Thus transport of sulfuric acid pump usually high silicon cast iron (casting and processing is very difficult), high-alloy stainless steel (alloy No. 20) to create.

因此输送硫酸的泵阀通常采用高硅铸铁（铸造及加工难度大）、高合金不锈钢（20号合金）制造。

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Dr. Clarke says he found that about one-third of his patients with heartburn didn't get better on proton-pump inhibitors, or have evidence of acid reflux, but in virtually every case, they had severe stress in their lives.

WSJ: Why Your Heartburn Drugs Don't Work