玻璃纖維增強(qiáng)塑料中哪個(gè)加固材料最常見(jiàn)普通?
應(yīng)該是碳 我有八成把握!B
Which one of the following is the most common reinforcing material in FRPs?
Which one of the following is the most common reinforcing material in FRPs?
A.Al2O3
B.carbon
C.cobalt
D.graphite
E.Kevlar 49
F.SiO2
A.Al2O3
B.carbon
C.cobalt
D.graphite
E.Kevlar 49
F.SiO2
英語(yǔ)人氣：916 ℃時(shí)間：2020-05-09 05:45:37
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