A.0.5m×0.15m×0.15m;1m B.0.5m×0.15m×0.15m;0.5m C.1m×0.15m×0.15m;1m D.1m×0.15m×0.15m;0.5m
A.400mm B.500mm C.600mm D.700mm
A.橫接縫 B.縱向冷接縫 C.縱向熱接縫 D.人工順直刨縫