单词	动力换档
释义	动力换档power shift
随便看	protective control protective covenant protective cover protective--cover protective covering protective cup protective current density protective current transformer protective custody protective deck protective device protective--device protective device against side running of conveyor belt protective device test protective diet protective dressing protective dune protective duty protective earth protective earth conductor protective earth connection protective earth (ground) protective earthing protective earthing conductor protective earthing conductor, protective grounding conductor, equipment grounding conductor