连杆大头 connnecting rod big end ; Big end ; crank pin end ; Connecting rod end

连杆大头轴瓦 big end bearing shell

连杆大头轴承 connecting rod bottom-end bearing ; connecting rod big end bearing ; [机] big end bearing

曲柄连杆大头的孔 crank bore

连杆大头盖 connecting rod cap

连杆大头轴 crankshaft end bearing

多头大螺距螺杆 coarse pitch multiple thread screw