另一种使用的草酸，是在最后的抛光玛瑙，大理石，和钙华。

Another use of oxalic acid is in the final polishing of onyx, marble, and travertine.

youdao

另一种使用的草酸，是在最后的抛光玛瑙，大理石，和钙华。

Another use of oxalic acid is in the final polishing of onyx, marble, and travertine.

youdao