broken and weak surrounding rocks

Soft and weak surrounding rock

Soft and weak surrounding rocks

Weak surrounding rocks

2nd-order weak focus

330 weak alkali epoxy anion exchange resin

a weak government

acylated weak base resin

adjoint weak global dimension

adjoint weak injective module

aeromagneitc weak information extraction

As a result of weak

Assessment of weak light tolerance

Audi-frequency weak current pulse

base weak sheet

big-hole weak alkaline resin

bottom weak story

bounded weak echo region

bounded weak echo zone