Abstract: Embodiments of the present disclosure disclose a data uploading method and apparatus, a device, and a medium. The method includes: in response to a preset operation triggered by a user before uploading application data, obtaining at least two data uploading protocols; performing data uploading performance testing on each data uploading protocol on the basis of a preset performance testing means, and determining a target uploading protocol that matches with a current network on the basis of a performance testing result; and in response to an application data uploading operation triggered by the user, uploading current target application data to be uploaded on the basis of the target uploading protocol.

Abstract: Embodiments of the present disclosure disclose a data uploading method and apparatus, a device, and a medium. The method includes: in response to a preset operation triggered by a user before uploading application data, obtaining at least two data uploading protocols; performing data uploading performance testing on each data uploading protocol on the basis of a preset performance testing means, and determining a target uploading protocol that matches with a current network on the basis of a performance testing result; and in response to an application data uploading operation triggered by the user, uploading current target application data to be uploaded on the basis of the target uploading protocol.

Abstract: A network bandwidth estimation method and apparatus, an electronic device and a storage medium are provided. The method includes: sending a bandwidth test file to a service terminal, and respectively acquiring network state parameters before and after sending the bandwidth test file, wherein a volume of the bandwidth test file is less than a preset file volume threshold; determining a first network bandwidth and a second network bandwidth based on the network state parameters and the volume of the bandwidth test file; inputting the network state parameters, the first network bandwidth, and the second network bandwidth into a current latest network bandwidth estimation model to obtain a target network bandwidth estimation result.

Abstract: The present invention discloses a performance prediction method and system of pervious concrete based on a meso-structure reconstruction model.

Abstract: An elevating mechanism is provided in the embodiments of the disclosure, which relates to the technical field of a substrate carrying mechanism device and is capable of decreasing incidence of an electrostatic-breakdown phenomenon of a substrate to be processed during an ascending-descending process thereof. The elevating mechanism is configured to carry the substrate to be processed, including a plurality of struts, each of which is provided at a supporting end thereof with a support portion which is in contact with the substrate to be processed, by means of a supporting surface provided on the support portion when the elevating mechanism carries the substrate to be processed; and an ionic wind supply.

Abstract: An elevating mechanism is provided in the embodiments of the disclosure, which relates to the technical field of a substrate carrying mechanism device and is capable of decreasing incidence of an electrostatic-breakdown phenomenon of a substrate to be processed during an ascending-descending process thereof. The elevating mechanism is configured to carry the substrate to be processed, including a plurality of struts, each of which is provided at a supporting end thereof with a support portion which is in contact with the substrate to be processed, by means of a supporting surface provided on the support portion when the elevating mechanism carries the substrate to be processed; and an ionic wind supply.