背板无任何鼓包的现象；无明显高点、凹坑现象；无铝框盖不住的缺口、移位等

背板无任何鼓包的现象；无明显高点、凹坑现象；无铝框盖不住的缺口、移位等缺陷

ผลลัพธ์ (อังกฤษ) 1:

Any bulge phenomenon back; no obvious peaks, pits without aluminum frame won't cover gaps, defects such as shift

ผลลัพธ์ (อังกฤษ) 2:

Backplane without any phenomenon of drum kits; no obvious high point, pits phenomenon; no aluminum frame cover any shortfall, displacement and other defects

ผลลัพธ์ (อังกฤษ) 3:

The phenomenon of the back cover is not any drum package, no obvious high, the phenomenon of the pit, no aluminum frame cover the gap, shift and other defects