unit of time แปลว่า
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increase energy using efficiency,increase productivity per unit of time.
Now we have a unit of time in common with the extraterrestrials.
Absorbed, equivalent and exposure dose, referenced to the unit of time, are called power appropriate doses.
A simple code labels each pulsar with its unique frequency, using the ticktock of the hydrogen atom as the unit of time.
The SI unit of time is the second. From here the minute (60 seconds) and the hour (3600 seconds) are derived. A day is assumed to be 86,400 seconds for the purposes of this calculator although this can vary with the insertion of a "leap second".