Test to determine the stability of a material when exposed
to a sudden high temperature change for a short period of time.
Hertz(㎐)
International standard term for cycles per second. Named after
the German physicist Heinrich R.Hertz (e.g.60 cycles per second
is equal to 60 ㎐ or 60 ㎐).
High Frequency
The band from 3 to 30 MHz in the radio spectrum, as designated
by the Federal Communications Commission.
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