在软的全风化及强风化花岗岩中，金刚石钻进比功值低于冲击凿碎比功值；
The value of SEDD is nearly equal to that of specific energy of percussive drilling(SEPD) in moderately weathered granite.
冻土凿碎比能是表示凿碎单位体积冻土所消耗的功，它反映了冲击破碎冻土的能力。
The impact penetrant specific energy of frozen soil indicates the work of chiseling the frozen soil per unit volume, and reflects the ability to impact frozen soil.
冻土凿碎比能是表示凿碎单位体积冻土所消耗的功，它反映了冲击破碎冻土的能力。
The impact penetrant specific energy of frozen soil indicates the work of chiseling the frozen soil per unit volume, and reflects the ability to impact frozen soil.
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