The flyover occupies a small area, and has high pass-through efficiency.
The multifunctional driveways use a looped structure, and 32 overpass points of the driveways are averagely distributed at multifunctional overpass areas of the four surrounding directions.
A crossroad overpass and a road network, where the crossroad overpass is provided at a crossroad of the road network.
The overpass consists of on-bridge roads and under-bridge roads.
Alternatively, the straightgoing overpass connecting path can be an overpass bridge, or an underground tunnel.
The overpass is of a closed design that reduces noise, promotes clean air, and enhances road transportation efficiency.
The elevator assembly comprises an elevator housing (50) and endless elevator means mounted for rotation in said housing (50), said elevator means having lower and upper lower runs (66a, 66b).
The fiber passes in through the top passage (113) and exits through another passage (115).
A top (600) and a bottom (603), a top channel (601) and a bottom channel (602).
The sleeve has surfaces that respectively define a lower ventilation port between the interior space and a lower ventilation passage and an upper ventilation port between the interior space and an upper ventilation passage.
When the flapgate is in the closed position, the effluent is free to flow out though the upper passage.
A system, for preventing overflow in a tank, fillable via a nozzle, includes a lower passage and an upper passage.
The upper passage has a lower end in communication with an interior of the lower passage and an upper end in communication with a hole in the nozzle.
The sleeve and the container have surfaces that cooperatively define the upper ventilation passage and the lower ventilation passage.
The adjusting chamber and the buoy induction chamber are communicated with each other via upper and lower through-hole.
A spout coupling assembly has a 'lower adaptor (110) defining a lower passageway (12) for housing a diverter (108) and an upper adaptor (126) coupled to the lower adaptor (110) defining an upper passageway (134).
The boundary portion includes a first through hole that is a through hole connecting an upper-tier passage and a lower-tier passage.
The valve has a valve body defining a bore (14) with an upper passageway extending from the bore.
An upper passage provided in the material enhances migration of the gas to the provided space.
The upper combustion chamber has an upper exhaust passageway between baffle and the top portion of the firebox.