shallow_cover的相关资料：
临近单词
shallow gas
shallow
shallow embedded under biased pressure
Shallow Water Acoustic Tracking System
shallow-flatted bottom concrete bins
Shallow Artificial Seismic Prospecting
shallow inversion of electric property
shallow-buried tunnel in soft ground
shallow-embedding-deep-excavation
shallow buried and unsymmetrical loaded
shallow burying and embedded excavation
shallow deflecting highly deviated well
