There are the various damages on the gear surfaces of triplex pumps made in China, especially, there exist a lot of phenomena of the pit corrosion.
国产三缸泵的齿轮齿面损伤严重，尤其以点蚀现象居多。
There are the various damages on the gear surfaces of triplex pumps made in China, especially, there exist a lot of phenomena of the pit corrosion.
国产三缸泵的齿轮齿面损伤严重，尤其以点蚀现象居多。
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