This paper compared several testing methods of carburizeddepth of high air pressure drill and evaluafed their accurately and practicality.
比较了高风压钻头渗碳层深度的不同检验方法 ,并对其正确性和实用性进行了探讨。
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The in-site checking situation is introduced, and the permeability of concrete structure is evaluated. The permeability result is validated indirectly by testing the carburizeddepth.