The soft water through softening process must be used to avoid its scale-formation blocking the waterway which may lead to unnecessary fault.
必须使用经过软化处理的软水，以免结垢堵塞水路，引起不必要的故障。
The soft water through softening process must be used to avoid its scale-formation blocking the waterway which may lead to unnecessary fault.
必须使用经过软化处理的软水，以免结垢堵塞水路，引起不必要的故障。
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