蠕墨铸铁硼缸套铸件与灰铸铁硼缸套相比，蠕墨铸铁缸套的相对磨损率为它的63%。
The relative wear rate of compacted graphite cast iron cylinder liner is 63%, as compared with a grey cast iron cylinder liner of the same B content.
利用这些钻头磨损的数学模型就可确定出与钻头最优绝对磨损、相对磨损相应的最优规程参数来。
Using the mathematical models of the bit wears, can be chosen optimal drilling parameters, suitable for optimal absolute and relative we...
利用这些钻头磨损的数学模型就可确定出与钻头最优绝对磨损、相对磨损相应的最优规程参数来。
Using the mathematical models of the bit wears, can be chosen optimal drilling parameters, suitable for optimal...
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