Abstract: An oil distributor includes a top surface and a bottom surface opposite to each other, and a side surface located between the top surface and the bottom surface. The top surface, the bottom surface, and the side surface form an oil distribution chamber. The top surface is provided with an oil inlet hole, which is communicated with an oil inlet pipeline in an external oil passage. The side surface is provided with at least one oil outlet, which is communicated with a lubrication pipeline. The bottom surface is disposed at a through hole of a housing of the reducer, and the bottom surface is provided with an oil distribution pipe located inside the housing of the reducer. The oil distribution pipe is provided with at least one oil spraying hole, and the oil spraying hole is communicated with an interior of the housing of the reducer.

Abstract: The subject technology receives a first semi-structured object. The subject technology iterates through a list of fields specified by a target object type. The subject technology, for each field, determines whether a field with a same name is present in the first semi-structured object. The subject technology, in response to the field being found in the first semi-structured object, converts a value of the field to a target field type according to defined type conversion rules. The subject technology stores the converted value in a unified representation comprising a data structure that stores both structured and semi-structured data types. The subject technology processes a query using the unified representation.

Abstract: The subject technology receives a query, the query referencing a unified representation for structured type data and semi-structured type data, the unified representation being provided in storage and in memory during query processing, the unified representation comprising a set of structured type fields that include a set of semi-structured typed fields that enables type safety and enforcement for the set of structured type fields, and flexibility for the set of semi-structured typed fields in a same column, the unified representation in storage including type information for the semi-structured type data as part of the semi-structured type data, the unified representation being utilized for structured type data and semi-structured type data. The subject technology processes the query using the unified representation stored in the memory, the unified representation providing performance parity between structured type data and semi-structured type data.

Abstract: The subject technology receives a query, the query referencing a unified representation for structured type data and semi-structured type data, the unified representation being provided in storage and in memory during query processing, the unified representation comprising a set of structured type fields that include a set of semi-structured typed fields that enables type safety and enforcement for the set of structured type fields, and flexibility for the set of semi-structured typed fields in a same column, the unified representation in storage including type information for the semi-structured type data as part of the semi-structured type data, the unified representation being utilized for structured type data and semi-structured type data. The subject technology processes the query using the unified representation stored in the memory, the unified representation providing performance parity between structured type data and semi-structured type data.

Abstract: Provided is a light source device, including: a laser generation unit configured to output laser light; a light modification element disposed in a light guide unit or between the light guide unit and a homogenizing unit and configured to cause an angular distribution of the laser light uniform and continuous; the light guide unit, configured to receive the laser light output by the laser generation unit and guide the laser light to the homogenizing unit; and the homogenizing unit, configured to receive the laser light from the light guide unit, and homogenize and output the laser light.

Abstract: Provided is a light source device, including: a laser generation unit configured to output laser light; a light modification element disposed in a light guide unit or between the light guide unit and a homogenizing unit and configured to cause an angular distribution of the laser light uniform and continuous; the light guide unit, configured to receive the laser light output by the laser generation unit and guide the laser light to the homogenizing unit; and the homogenizing unit, configured to receive the laser light from the light guide unit, and homogenize and output the laser light.