常用材料声速表精品文档材料in/usm/smm/ps铝0.25063056.305铋0.08621842.184黄铜0.17343944.394钙0.10927692.769铸铁0.18(apprx)45724.572康铜0.20652325.232紫铜0.18446744.674环氧树脂0.100 (apprx)25402.54白铜0.18747504.75玻璃0.22356645.664火石玻璃0.16842674.267金0.12832513.251冰0.15739883.988铁0.23258935.893铅0.08521592.159镁0.22857915.791汞0.05714481.448镍0.22256395.639尼龙0.102(apprx)25912.591石蜡0.08722102.21铂0.15639623.962有机玻璃0.10626922.692聚苯乙烯0.09223372.337陶瓷0.230(apprx)58425.842PVC0.09423882.388石英玻璃0.22256395.639硫化橡胶0.09123112.311银0.14236073.607普通钢0.23359185.918不锈钢0.22356645.664斯太立硬质合金0.275(apprx)69856.985聚四氟乙烯0.06514221.422锡0.13133273.327钛0.2460966.096钨0.21053345.334锌0.16642164.216水0.15814731.473