coordinated universal time

Converts the time in a specified time zone to Coordinated Universal Time ( UTC ).

将指定时区中的时间转换为协调世界时( UTC ).

When a timezone value is added to a Universal Coordinated Time ( UTC) dateTime, it results in a date and time in that timezone.

当将一个时区值添加到通用协调时间（Universal Coordinated Time，UTC）dateTime时，将会生成该时区中的日期和时间。

The evolution of time measurement system has experienced the following stages in general: the ancient time measurement systems, universal time, ephemeris time, atomic time and universal time coordinated.

时间计量系统的演变大致经历了如下几个阶段：古代的时间计量系统、世界时、历书时、原子时、协调世界时。