shut-down period的意思|示意

I just find it curious that Ubuntu has swapped a quick boot time for an equally longer shut-down period.

我不明白为什么会这样，我只是好奇为什么Ubuntu用更短的开机时间换来了更长的关机时间。

In this article, with the analysis of several accidents of tubular heater used in heating net due to the poor maintenance during shut-down period, the correct maintenance methods were summarized.

通过对管壳式热网加热器由于停运时维护不当造成的几起事故进行分析，总结了若干热网加热器停运时的维护与保养方法，以供热电厂参考。

In strict accordance with industry admittance requirements, the backward productivity shall be managed and rectified within a time period, failing which enterprises shall be shut down.

严格行业准入条件，对落后产能实行限期治理和整改，仍不达标的应予关停。

The pipe filter must be shut down for cleaning and drainage regularly during its operation, and this usually interferes with the long-period operation of the equipment in the system.

管道过滤器在运行过程中必须定期停车清洗、排污，往往影响系统设备长周期运行。