According to the standard:
General Technical Tequirements for Testing Machine GB/T2611-2007
Tension, Pressure and Universal Testing Machine JJG 139-2014
DL/T 5386-2007 Water Resources and Hydropower Enginnering Rock Testing Regulations
JTG E41-2005 Highway Engineering Rock Testing Regulations
GBT 50266-2013 Engineering Rock Mass Testing Norm
GB/T16826-2008 Electro-hydraulic Servo Universal Testing Machine