以秒为单位的UTC时间戳需要转换为更有意义的日期时间戳。
The UTC time stamp in seconds will need to be converted into a more meaningful current date time stamp.
这个类提供的方法可以用于通过标准的数学转换（比如 1分钟 =60秒，1天 =24小时），将时间跨度转换为标准单位（比如秒、分和小时）。
Methods on this class can be used to convert to standard units such as seconds, minutes, and hours, using standard mathematical conversions (such as 60 seconds in a minute and 24 hours in a day).
通过调整驱动脉冲增量，实现了单位时间亮暗转换次数最大化和亮暗转换频率均匀化的优化目标。
By adjusting the driving pulse increment, the bright dark conversion to maximize the number of dark and light switching frequency optimization goal of homogenization in per unit time were achieved.
由于转换时的停机时间是整体操作成本的重要因素，所以电路板传输系统对降低每个贴装单位成本起着一定的作用。
Since downtime for changeovers is an important factor in overall operating costs, the board transport system has a very substantial part to play in reducing cost per placement.
由于转换时的停机时间是整体操作成本的重要因素，所以电路板传输系统对降低每个贴装单位成本起着一定的作用。
Since downtime for changeovers is an important factor in overall operating costs, the board transport system has a very substantial part to play in reducing cost per placement.
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