Loose Rock and Soil  松散岩土体

Loose surrounding\ rock  破碎围岩

relation of support and surrounding-rock  支架－围岩关系

rock and rock mass  岩石与岩体

soft and broken surrounding rocks  松软破碎围岩

Broken Surrounding Rock  破裂围岩; 破碎围岩

combination of stiffness and loose  趾诸部

core recovery from loose rock  松散岩层取心

DC loose and hold gate  直流松抱闸

fast and loose pulley  固定轮和游滑轮; 快慢皮带轮

Loose and soft Coal Seams  松软煤层

loose and strict combination  宽严相济

loose circle theory of surrounding rock  围岩松动圈理论

loose range of surrounding rock  围岩松动圈

loose ring of surrounding rock  围岩松动圈

LOOSE ROCK  疏松的碎石; 疏松岩石; 松散岩堆体

LOOSE ROCK BLOCKS  松散岩块

loose rock dam  堆石坝

loose rock formation  松散岩层