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金虫 (小有名气)

[求助] ppi 已有1人参与

泡沫金属材料的ppi是啥意思?与ph有关吗?求告知,谢谢啦!

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木虫 (小有名气)

【答案】应助回帖

ppi的全称是pores per inch,每英寸上的孔数,与ph无关

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2楼2017-03-02 21:28:19
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