表明这一迹象的是撞击掀起的尘土中显示的红外线光谱中的一些谱线，其频率与水分子能量激发时所发出光线的频率相应。
The telltales are specific "lines" in the spectrum of infra-red light from the plume. These correspond to the frequencies of light given off when water molecules are energetically excited.
它们还可以辐射远红外线不同频率(区)的能源，这点是一般人做不到的。
They can also radiate far infrared ray (FIR) energy of varying frequencies, which is something ordinary people can not do.
带红外线遥控，可对音响和各种音柱任意遥控设置音量、地址码、频率。
With the infrared remote control, it can set the volume, address code, frequency for the various column loudspeakers willful remote control of the sound.
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