engine hold-down bolt 引擎压紧螺栓

differential hold-down bolt 差速器压紧螺栓

fuel injector hold-down bolt 喷油器压板螺栓

injector hold-down bolt 喷油器固定螺栓

explosive hold-down bolt 爆发压紧螺栓

bolt hold down cap 螺栓压紧式泡罩

filter adapter hold-down bolt torque 滤清器接盘螺栓拧紧扭矩

hold-down anchor bolt 系紧螺栓

bolt hold-down bracket 机心定位架