厚度（mm）宽度（mm）长度（m）比重（g/cm3）重量（kg）单位备注31518.90.400532018.90.53432518.90.667533018.90.720943018.91.06844018.91.42445018.91.7852018.90.8952518.91.112553018.91.33554018.91.78510018.94.4555018.92.22562518.91.33565018.92.6766018.93.20468018.94.272610018.95.3484018.92.8585018.93.5686018.94.27288018.95.696810018.97.12812018.98.544104018.93.56105018.94.45106018.95.34108018.97.121010018.98.91012018.910.6818.918.9铜排理论重量表18.9