单轴抗压强度是指岩石试件在单向受压至破坏时，单位面积上所能承受的荷载，简称抗压强度。据其含水状态接压坏标准试件测得，又有干燥抗压强度、天然抗压强度与饱和抗压强度之分。
然后确定煤岩块单轴抗压强度与探针临界载荷的关系。
Then the relation between the UCS of coal and rock blocks and the critical load of the penetrating needle is determined.
通过试验得出不同级配混凝土试样的纵波波速与其单轴抗压强度的关系。
The relationship between uniaxial compressive strength and the velocity of longitudinal wave of concrete material with different grading is found through laboratory testing.
估算了侵彻时靶体强度，侵彻时花岗岩强度高出其单轴抗压强度好几倍；
The dynamic strength of granite target is estimated, which is many times larger than the unconfined compressive strength.
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