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1.The mean time between maintenance is 2 hours.
维护之间的平均时间为2小时。
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2. The company's policy is to maintain the equipment for at least 3 years.
公司的政策是至少保持设备3年。
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3. The engineers will conduct regular inspections to ensure the machinery is maintained properly.
工程师将定期检查以确保机械设备得到适当维护。