Abstract: The present disclosure discloses a method for quantifying a bearing capacity of foundation containing shallow-hidden spherical cavities, comprising: in Step 1, constructing a spatial axisymmetric calculation model for stability analysis of the foundation containing shallow-hidden spherical cavities; in Step 2, solving the model to obtain a general solution which reflects the spatial stress distribution of surrounding rock containing shallow-hidden spherical cavities; in Step 3, obtain a mathematical expression by derivation for calculating the bearing capacity of the foundation containing shallow-hidden spherical cavities; and in Step 4: completing the determination of the foundation bearing capacity. Benefits: This method has many advantages such as comprehensive consideration, high accuracy and reliability of calculation results, and may provide the scientific basis for the development of prevention and control against the instability of the foundation containing shallow-hidden cavities.

Abstract: A rocker polishing apparatus for full-aperture deterministic polishing of a planar part includes a control system, a substrate, a lifting plate, a polishing module and a measuring module. The polishing module and the measuring module are arranged on the substrate. The lifting plate is arranged between the polishing module and the measuring module. The polishing module includes a rocker mechanism, a polishing pad surface dressing mechanism, a polishing pad surface profile measuring apparatus and a continuous polishing pad mechanism. The apparatus allows the material removal rate distribution of the planar part and the surface profile of the planar part be in the normalized mirror symmetry relationship by controlling the material removal rate distribution on the surface of the planar part, thereby implementing the deterministic polishing of the planar part and ensuring the efficient convergence of the surface profile of the planar part in the polishing process.

Abstract: The present disclosure relates to a method, apparatus, electronic device and storage medium for presentation of a matching scheme. The method comprises: acquiring a set of matching schemes; transmitting, to a first terminal, attribute information of matching schemes in the set of matching schemes, so that the first terminal displays attribute information of matching schemes comprised in the set of matching schemes; in response to a selection request for one of matching schemes transmitted by the first terminal, determining the selected matching scheme as a matching scheme to be explained; in response to a presentation request for the matching scheme to be explained that is transmitted by a second terminal, transmitting attribute information of the matching scheme to be explained to the second terminal, so that the second terminal presents a target information streaming page comprising at least a part of attribute information of the matching scheme to be explained.

Abstract: Provided is an ultraviolet device packaging structure, including: a substrate, a light-emitting cup, a UV light-emitting diode (LED) chip, a protection chip, and a detection chip. The substrate is provided with a front surface circuit layer on a front surface and an electric bonding pad on a rear surface. An inner wall of the light-emitting cup is a light-concentrating reflecting surface. The light-emitting cup is open at both ends, one end of the light-emitting cup is a light-emitting port, and the other end is fixedly disposed on the front surface of the substrate. The UV LED chip, the protection chip, the detection chip are all disposed in a functional region of the front surface circuit layer. The detection chip and the protection chip are both located at a side of the UV LED chip that is away from the light-emitting port. A lens is fixedly disposed at the light-emitting port.