名词
中文翻译：主要维护期同义词
同义词：
['maintenance period', 'critical period', 'service life']
例句：
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1. The company's main maintenance period is from January to March.
该公司的主要维护期从一月到三月。
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2. During the main maintenance period, we need to ensure that all systems are functioning properly.
在主要维护期，我们需要确保所有系统都正常运行。
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3. The main maintenance period for this machine is six months.
这台机器的主要维护期是六个月。