seasonal maintenance

基本解释

With many refineries in the midst of seasonal maintenance, not all of that capacity is being used.
由于许多炼油厂都在进行季节性维护保养，产能并未全面投入运行。
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Thirdly, American gasoline consumption usually falls in August and September due to end of vacation, and refinery shut for seasonal maintenance during the period.
第三，美国的汽油消费通常会在八月和九月下落，原因就是假期的结束，而在此期间炼油厂也会因为维护而关闭。
According to the maintenance speciality, discussion is made on the asphalt pavement mainly from preliminary maintenance, daily maintenance and seasonal maintenance.
针对沥青路面的养护特点，从初期养护、日常养护及季节性养护三个方面对沥青路面养护进行了论述。

The onset of the Libyan crisis fortuitously coincided with the peak of the European refinery outages, primarily linked to seasonal maintenance work, and thus lower demand for crude oil.
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This is largely due to an expected dip in production in the second and third quarters owing to seasonal factors and planned maintenance, as well as asset sales.
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Several analysts said copper could fall some more in the next couple of months due to this uncertain backdrop, and also because of slower seasonal demand during the vacation season and maintenance shutdowns in the Northern Hemisphere.
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