普氏系数 meaning in Chinese

protodyaknove's number

Rock formation classifying table based in proctor coefficient
普氏系数岩石公级表
Comb drill head is applicable for clay and cemented glutinite with 6 - grade drillability . the compressive strength is no more than 4 of pull coefficient
梳齿钻头适合于粘土、胶结的砂砾岩层等，可钻性6级以下。抗压强度在普氏系数4 。
Ball hob drill head is applicable for harden rock layer , fine grain granite , and it has below 9 - grade drillability . the compressive strength is no more than 15 of pull coefficient
球齿滚刀钻头适合于坚硬岩层，细晶花岗岩，可钻性9级以上，抗压强度在普氏系数15 。
Wedge hob drill head is applicable for medium harden rock layer , coarse grain granite , and it has below 9 - grade drillability . the compressive strength is no more than 10 of pull coefficient
楔齿滚刀钻头适合于中硬岩层，粗晶花岗岩，可钻性9级以下，抗压强度在普氏系数10 。
For this reason , protodrakonov scale of hardness of the cobalt crust is measured by impact crushing test and factors affecting its crushability are analysed , providing the basis for designing crushing devices
为此采用冲击破碎试验法测定了钴结壳的普氏系数，并分析了影响其破碎强度的相关因素，为将来结壳破碎装置的设计提供了依据。