求翻译：Liquid leakage happened frequently on present ISO circulating mechenical gear pumps in KOR area due to its own structure, we plan to purchase magnetic drive pumps to replace them to avoid leakage. One magnetic drive pump has been tested successfully this year. The present 2 pumps will be as the spare of other raw mater是什么意思？

待解决 悬赏分：1 - 离问题结束还有