Abstract: A dust collection device includes: an air inlet channel, a dust settling channel extending along a preset path, an airflow rotation channel surrounding the settling channel, an air outlet channel and a collection chamber, where one end of the airflow rotation channel is communicated with the dust settling channel, and the other end of the airflow rotation channel is communicated with the air outlet channel; an upstream end of the dust settling channel is communicated with the air inlet channel, and a downstream end of the dust settling channel is communicated with the collection chamber; and the height of the dust settling channel gradually decreases in an extension direction of the preset path. Dust in the airflow rotation channel can easily settle under the action of a centrifugal force when moving along the airflow rotation channel.

Abstract: The present disclosure provides a gas injector, disposed in a diffusion furnace device, the gas injector including an inner chamber, wherein a chamber wall of the inner chamber is provided with a plurality of protrusion structures, and the plurality of protrusion structures are arranged in an array on the chamber wall.

Abstract: A board-to-board connector comprises: a male end having at least three rows of male insert terminals; and a female end having at least three rows of female insert terminals, the number of rows of the female insert terminals being equal to the number of rows of the male insert terminals. A region on the male end near the middle row of male insert terminals is provided with a male end window, which is formed in an injection molding process by a clamping component for clamping the middle row of male insert terminals in a male end injection mold. A region on the female end near the middle row of female insert terminals is provided with a female end window, which is formed in an injection molding process by a clamping component for clamping the middle row of female insert terminals in a female end injection mold.

Abstract: Embodiments of the present disclosure disclose an interactive method, a client device, a mobile terminal and a server, which relate to an Internet technology field and provide a new way for interacting with a user. The interactive method provided by the present disclosure includes: sending a first request of obtaining first activity information to a server, such that the server obtains the first activity information in local according to the first request of obtaining first activity information, the first activity information comprising an activity entrance icon; receiving the first activity information returned by the server; displaying the activity entrance icon on a user interface of the client device according to the first activity information; receiving an activity participating instruction issued by a user through operating the activity entrance icon; popping up an activity participating result according to the activity participating instruction.

Abstract: Embodiments of the present disclosure disclose an interactive method, a client device, a mobile terminal and a server, which relate to an Internet technology field and provide a new way for interacting with a user. The interactive method provided by the present disclosure includes: sending a first request of obtaining first activity information to a server, such that the server obtains the first activity information in local according to the first request of obtaining first activity information, the first activity information comprising an activity entrance icon; receiving the first activity information returned by the server; displaying the activity entrance icon on a user interface of the client device according to the first activity information; receiving an activity participating instruction issued by a user through operating the activity entrance icon; popping up an activity participating result according to the activity participating instruction.

Abstract: Embodiments of the present disclosure disclose an interactive method, a client device, a mobile terminal and a server, which relate to an Internet technology field and provide a new way for interacting with a user. The interactive method provided by the present disclosure includes: sending a first request of obtaining first activity information to a server, such that the server obtains the first activity information in local according to the first request of obtaining first activity information, the first activity information comprising an activity entrance icon; receiving the first activity information returned by the server; displaying the activity entrance icon on a user interface of the client device according to the first activity information; receiving an activity participating instruction issued by a user through operating the activity entrance icon; popping up an activity participating result according to the activity participating instruction.