“electromagnetic wave”造句，怎么用electromagnetic wave造句

An electromagnetic wave of audio frequency produced by atmospheric disturbances such as lightning, having a characteristically decreasing frequency responsible for a whistling sound of descending pitch in detection equipment.

Communication of audible signals encoded in electromagnetic waves.

a delay line based on the time of propagation of electromagnetic waves.

If the resistance is small, most of the energy is radiated in the form of electromagnetic waves.

We have already established that light may be treated as a transverse electromagnetic wave.

a wave (as a sound wave in a chamber or an electromagnetic wave in a transmission line) in which the ratio of its instantaneous amplitude at one point to that at any other point does not vary with time.

Every body radiates heat in the form of electromagnetic waves.

An accelerated charged particle radiates energy in the from of an electromagnetic wave.

It is suggested that the electromagnetic wave fr om the plant seedlings is beneficial to the erythrocyte function, improves the m e tabolism, enhances the adolescent activities, improves sexual activity and enhan ces immune function, thus it is effective to health care and rejuvenation.

The variation of a property of an electromagnetic wave or signal, such as its amplitude, frequency, or phase.

These currents become the source of new electromagnetic waves which can be detected by suitable pickup coils.