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