The university music education should hold the opportunity,the union reality,acts as circumstances permit,to excavate the original ecology music resources,raises both has the music specialize.

In view of the limitation of signal dotting and phonetic communication device used for coal mine,a kind of flameproof signal dotting and phonetic carrier-current communication device especially suited to satisfy the current needs of modernization mine production with high-capacity and high-efficiency is designed,its effects and performance has been validated.