油槽
Tank
Oil
sump
groove
Oiling
grooves
Tanks
tanker
channel for oiling
fuel tank
oil bath
oil tank
oil reservoir
oil receptacle
oil well
oil trough
blind technology
oil pot
oil sump
Block and graft copolymerization
oil groove
oil gap
tank oil
oil space
oil switch
oil duct
oil storage tank
oil channel
oil pocket
十字头轴承油槽
crosshead bearing oil groove