shaft belay的相关资料：
临近单词
shaftman
shaft
shaft-rate electromagnetic field
shaft well irrigation and drainage
shaft - extension tubular turbine
shaftless filling-capping machine
shaft lining sinking while floating
shaft formation by longhole blasting
shaft-sinking with freezing method
shaft prospecting engineering survey
Shaft-oriented feed grinding method
Shaft diameters for unsplit bushes.
