pivot bearing swing bridge
bearing bearing of pile
桩的承载力
聚对苯二甲酸乙二醇酯(PET)
聚对苯二甲酸乙二醇酯
steel wire roller conveyer bearing
bucket conveyer
链斗式输送机
斗式运输机
斗式输送机
斗式运送机
斗式运输器
斗式提升机
large inclination angle and large mining height
Large Department System i
13m large Cantilever Structure
220 kV large central substation
400kA large pre-baked aluminum smelting cell
a coherent state cavity field of large amplitude
A large aluminium alloy shapes
a large amount of replacement
a large heavy-ion collider experiment (ALICE)