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介绍了用直接拉伸法测定岩石在拉什条件下应力－应变全过程曲线试验的原理和方法，并对用这种方法测得的拉伸应力－应变全过长曲线进行了分析，研究了岩石在拉伸条件下变形和强度特性．
The principle and method of the whole stress-strain curve test of rock under the condition of Lash by direct tension method are introduced. The tensile stress-strain full-length curve measured by this method is analyzed and studied. Rock deformation and strength properties under tensile conditions.