推 rubyart: 我課程雖然教磨甲機但我沒在學費的材料 61.228.241.218 02/03 10:32
→ rubyart: 裡付機器,因為想讓學生依據手頭的預算挑 61.228.241.218 02/03 10:32
→ rubyart: 選合適的磨甲機,能夠左右旋的機器會比 61.228.241.218 02/03 10:32
→ rubyart: 較合適!!! 61.228.241.218 02/03 10:32
→ rubyart: 低階跟高階機器,在長時間使用時震度及 61.228.241.218 02/03 10:32
→ rubyart: 穩定度的差異會最大 61.228.241.218 02/03 10:32