A crontab line contains two main sections, a time schedule section followed by a command section.
一个crontab行包括两个主要部分，即时间调度部分及其后接的命令部分。
It's one of the main machines in the modern pipe mill line and formed section line.
它是现代高频直缝焊管生产线和冷弯型钢生产线的主要设备之一。
And the dynamic characteristics of trains flow in speed limit section of main-line railway are analyzed.
随后对干线铁路中限速区段交通流的特性进行了分析。
And the dynamic characteristics of trains flow in speed limit section of main-line railway are analyzed.
随后对干线铁路中限速区段交通流的特性进行了分析。
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