频带
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(频(pín )带(dài ),频(pín )带(dài ))
在(zài )电(diàn )磁(cí )波(bō )或(huò )声(shēng )波(bō )波(bō )谱(pǔ )中(zhōng )的(de )一(yī )段(duàn )波(bō )长(zhǎng )范(fàn )围(wéi )。
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