1) classification of drilling possibility
可钻性分级
2) drilling character classification
可钻性进分级
4) rock drillability
岩石可钻性级值
1.
Value model of rock drillability and its calculation;
岩石可钻性级值模型及计算
6) drillability classification number
可钻性分类指数
补充资料:冻土钻(见取土钻)
冻土钻(见取土钻)
dongtuzuan冻土钻见取土钻
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条