Grounding: Each machine should have 1/ 4-20 earth ground stud on each side ( left and right) of the machine. 接地线:每个设备应该在两端(左右)配备1/4-20的接地线。
Shaking table tests for seismic response of pile-supported bridge structure with single-column pier in liquefiable ground Welding Torch Research and Technological Experiment for Automatic Stud Welding with Hybrid Resource 可液化场地桥梁群桩-独柱墩结构地震反应振动台试验研究