shallow pitch的相关资料：
临近单词
shallow gas
shallow
shallow tunnel under unsymmetrical pressure
shallow buried undergrond excavation method
shallow tank flotation wastewater treatment
shallow drilling-boring-milling machine
shallow foundation and eccentric compression
shallow buried cylindrical elastic inclusion
shallow water multibeam bathymetric sounding
Shallowly Discusses the Ecology Civilization
shallow-buried and unsymmetrical-pressure
shallow large-section underground structure
