原子钟

It analyzes the influence of the time-frequency properties of atom clock on time-keeping error by quantity, and estimates the error of related physical measure caused by the time-keeping properties of atom time-frequency criterion-time resolution.

定量分析了原子钟的时间频率特性产生的守时时差，估算了原子时频标准的守时时差对有关物理量测量所产生的影响。

Furthermore, they continuously transmit radio signals of low power and ultra high frequency. They are also equipped with atomic clocks. When GPS receivers intend to calculate its GPS position on the earth, they will receive the signals from satellites, calculate transmission time with a pre-stored ephemeri, and then calculate the distances between themselves and at least four GPS satellites with the method of trilateration.

所有的卫星架有原子钟，当GPS接收器要找出自己目前在地球表面上的位置时，会接收各卫星的讯号，并依储存的星历表计算传送时间，再利用三边测量法订出自己与至少四颗GPS卫星之间的精确距离，即可算出所在位置。

Time is now set not by earth's rotation, but by satellite and atomic clock.

现在是时间设定不是由地球自转的，而是由人造卫星和原子钟。

Because of the influence of different noise and the other factors, the running of an atomic clock is very complex.

由于各种噪声和其他因素的影响，原子钟运行情况十分复杂。

Such a molecular or atomic clock is now being developed and promises to be very accurate.

这种分子和原子钟目前正在发展中，预期能有很高的准确度。

Time is now set not by earth's rotation, but by satellite and atomic clock.

现在，时间不再以地球的自转来设定，而是使用卫星和原子钟来确定。

This freeware Atomic Clock Sync utility can help you keep your local computer up-to-date with the exact current time.

这个免费的原子钟同步实用工具可以帮助您使您的本地计算机上不断更新与当前的确切时间。

This freeware Atomic Clock Sync utility can help you keep your local computer up-to-date with the exact current time.

这免费原子钟同步工具可以帮助您保持您的本地计算机上最新的确切当前时间。

You can choose to automatically receive this signal four times a day, or manually update the watch to the atomic clock.

你可以选择自动接收这个信号4次，每天或手动更新手表的原子钟。

By a easy click you can adjust your clock be a atomic clock synchronized with the astronomical time.

由一个简单按一下您可以随时调整时钟是一个原子钟同步与天文数字的时间。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。