背面大面積之鋁面，使用氣動工具拋光鋁面(圖九)，拋光時並注意拋光是否均

背面大面積之鋁面，使用氣動工具拋光鋁面(圖九)，拋光時並注意拋光是否均勻。

結果 (英文) 1:

Use a pneumatic tool to polish the aluminum surface on a large area on the back (Figure 9). Pay attention to whether the polishing is uniform.

結果 (英文) 2:

Large area of aluminum surface on the back, using pneumatic tools to polish the aluminum surface (Figure 9), polishing and pay attention to whether the polishing is uniform.

結果 (英文) 3:

For large area of aluminum surface on the back, use pneumatic tools to polish the aluminum surface (Fig. 9). When polishing, pay attention to whether the polishing is even.