n.長(zhǎng)波

In radio communication, either short or long waves may be used. 無(wú)線電通訊可以采用短波也可以采用長(zhǎng)波。

Short wave lengths correspond with high frequencies,and long wave lengths to low frequencies. 短波波長(zhǎng)和高頻相對(duì)應(yīng)，長(zhǎng)波波長(zhǎng)與低頻相對(duì)應(yīng)。