输送机输送带张力调整
conveyor belt tension adjustment
复合式高架输送机
overhead power & free conveyor
Potential hazard
35kV架空输电线路
35 kV overhead transmission line
35kV架空送电线路
35kV overhead transmission lines
船用柴油机机架
Marine diesel engine frame
二自由度起重机机架模型
two-degree-of-freedom crane system
发电机机架固定螺栓
generator frame mounting bolt