The summer sky and a sundress brighten the shaded "slow stairs" of the High Line's 14th Street entrance, which earned the nickname because of the extended platforms between flights.

The tourism in Gansu Province is at the stage of resources-oriented type, and located in the inferior position in the travel image ladder of the Northwest.

It is indicated that if the shoulder height of the stepped cross section piston ring is properly selected, its bearing capacity may be greater than that of the cir...