On the need for a 24-hour non-stop operation of the pump, should reserve three pumps, operation, a backup, a maintenance.
对需24小时连续不停运转的泵，应备用三台泵，运转，一台备用，一台维修。
On the need for a 24-hour non-stop operation of the pump, should reserve three pumps, operation, a backup, a maintenance.
对需24小时连续不停运转的泵，应备用三台泵，运转，一台备用，一台维修。
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