Abstract: The disclosure discloses a percussion and cutting composite drilling tool, which relates to the field of drilling equipment and is mainly used to solve the problems of low working efficiency and high wear rate of drill bit existed in breaking rocks only by cutting effect. The main structure comprises a PDC drill bit and a percussion drill bit, which is characterized by a percussion structure directly connected to the percussion drill bit. The disclosure provides a percussion and cutting composite drilling tool, which is suitable for strata under different geological conditions and has higher construction efficiency and lower bit wear.

Abstract: The present disclosure provides a method and apparatus for adjusting a virtual face model, an electronic device and a storage medium, so as at least to solve the technical problems of tedious operation steps and poor user experience of conventional solutions for adjusting a virtual image. A specific implementation solution includes: a real human face in a reality scene is identified to obtain a first virtual face model of the real human face in a virtual scene; in response to a face-pinching operation acting on the real human face, the face-pinching operation is identified to determine at least one to-be-adjusted key point in the first virtual face model and an adjustment manner of the at least one to-be-adjusted key point; and the first virtual face model is adjusted to a second virtual face model based on the adjustment manner of the at least one to-be-adjusted key point.

Abstract: The present disclosure discloses a method and apparatus for merging data of building blocks, a device and a storage medium, and relates to the field of electronic map and big data. A specific implementation comprises: acquiring data of building blocks of a target work region; dividing the target work region containing the data of building blocks into at least one target region based on a preset geographic isolation attribute; dividing each target region into at least one grid region based on a direction feature of a building block obtained by performing a direction feature extraction on the data of building blocks; and determining a relative positional relationship between corresponding building blocks based on data of building blocks in each grid region, and merging data of building blocks of at least two building blocks having a preset positional relationship.

Abstract: Disclosed herein are compositions comprising a propylene-based elastomer, an ethylene-based polymer, a filler, and a polar component. The polar polymer can comprise one or more of a tackifier, a grafted propylene-based elastomer, and an ethylene copolymer having polar comonomers, as well as a composite material comprising a first layer made from such composition and a second layer that can be made from polar material and is well bonded onto the first layer.