被动逐步后退法
Passive step-back technique
step-back technique
改良逐步后退法
modified step-back technique
Improved step-back technique
Duane眼球后退综合征
Duane′s retraction syndrome
膀胱后壁恶性肿瘤
Malignant neoplasm of posterior wall of bladder
壁后充填
Backfilling
Filled with substance behind support
壁后注浆
Wall-back grouting
pouring mortar into behind underground wall
backfill grouting
grouting on the wall back
Grouting behind Segment
grouting in the back of wall
inject concrete upon the well
backwall grouting