79型大革胡(见图1)是在1979年试制完成的,因为它的共振发音体不用蟒蛇皮,全部采用带有扁球面突起的木板,所以也可以叫作79型全板协振式大革胡。这只大革胡是在77型大革胡的基础上研究改进而成的,主要的试验集中在琴马和前、后、右三块振动 Type 79 (shown in Figure 1) was trial-produced in 1979 because of its resonant sound without python skin, all with flat spherical protrusions of the plank, it can also be called the 79 full-panel co-vibration Great leather Hu. This leather is only based on the research and development of the 77 leather Da Hu made improvements, the main test focused on the bridge and the front, rear, right three vibration