Keeson Technology Corporation Limited

Zhejiang Sunny Optics Co., Ltd.

Caipu Technology (zhejiang) Co., Ltd.

Alipay (hangzhou) Information Technology Co., Ltd.

Powerchina Huadong Engineering Corporation Limited

Advanced New Technologies Co., Ltd.

Jian Wang

Huafeng Shan

Fujian Dai

Liefeng Zhao

Lingbo He

Juan Xu

Fan Zhou

Kan Zhang

Chuanxiang Ji

Yuan Cheng

Xin Guo

Jiayao Zhang

Xiang Nie

Kun Yuan

Shaojun Li

Yang Zhang

Zhigang Shan

Jinlong Hou

Jianjun Li

Weida Ni

Hewen Wu

Xiaowen Lu

An Liu

Meifeng Niu

Kun Zhang

Peng Peng

Shuanghu Gong

Yanling Guo

Xiaoying Zeng

Kaixiang Ji

Zhi Qiao

Weixiang Hong

Siyu Sun

Qiqi Hu

Jiajia Liu

Liguo Feng

Jingdong Chen

Haitao Zhang

A rapid assembly and automatic sampling drilling tool for frozen soil layer exploration includes a fixed flow divider, a flow guide pipe, a coring pipe and a drill bit. The fixed flow divider is connected to the drill bit through the flow guide pipe and the coring pipe mounted between the fixed flow divider and the drill bit. Two ends of the flow guide pipe communicate with the fixed flow divider and a main flow channel in the drill bit respectively. Hot water in the fixed flow divider can be conveyed into the drill bit through the flow guide pipe and sprayed from a nozzle arranged on the drill bit for drilling and coring operations. An inlet of the coring pipe communicates with a coring channel in an inner cavity in the drill bit, and a core sample drilled by the drill bit is taken out through the coring pipe.

Rapid assembly and automatic sampling drilling tool for frozen soil layer exploration

A bed body structure is disclosed which includes a bearing mechanism, a turnover mechanism, a base and a flexible supporting layer; wherein the turnover mechanism is arranged between the bearing mechanism and the base, and the flexible supporting layer covers the top of the bearing mechanism; the bearing mechanism includes at least two supporting assemblies; in a flat-laid state, all the supporting assemblies are horizontally arrayed on the top of the base in sequence; and in an unfolded state, the turnover mechanism enables at least one of the supporting assemblies to be upwards turned over relative to the base.

Bed body structure

A bed frame includes: an external frame, an internal supporting portion and a bed cover. The external frame is a hollow frame. The internal supporting portion is of a large-interval structure. The internal supporting portion is arranged inside the external frame to reinforce the strength of the external frame. The bed cover covers the top faces of the external frame and the internal supporting portion to form a flat bed surface.

Bed frame

Implementations of the present specification provide a video retrieval method and apparatus. In the method, a video frame in a video to be matched is obtained; an image feature and a text feature are extracted from the video frame; the image feature and the text feature are fused based on a center variable used to represent a cluster center to obtain a fused feature, where the center variable is used to associate features of different modes of a same video; and video retrieval is performed in a video database based on the fused feature to determine a video in the video database that matches the video to be matched, where a plurality of videos and video features corresponding to the plurality of videos are stored in the video database.

Video retrieval method and apparatus

An optical imaging lens assembly having, sequentially along an optical axis from an object side to an image side, a first lens, having a positive refractive power, an object-side surface of the first lens being a concave surface; a second lens, having a negative refractive power, an image-side surface of the second lens being a convex surface; a third lens, having a refractive power; a fourth lens, having a refractive power; a fifth lens, having a refractive power; a sixth lens, having a refractive power; a seventh lens, having a refractive power; and an eighth lens, having a refractive power.

Optical imaging lens assembly

The disclosure provides an optical imaging lens assembly, which sequentially includes, from an object side to an image side along an optical axis: a first lens with a negative refractive power, an object-side surface thereof is a concave surface, an image-side surface thereof is a convex surface; a second lens with a refractive power; a diaphragm; a third lens with a refractive power, an object-side surface thereof is a convex surface, an image-side surface thereof is a convex surface; a fourth lens with a refractive power; and a fifth lens with a refractive power. Semi-FOV is a half of a maximum field of view of the optical imaging lens assembly, and Semi-FOV meets Semi-FOV≥55°.

An optical imaging lens assembly including, sequentially from an object side to an image side along an optical axis, a first lens, a second lens, a third lens and a fourth lens. Each of the first lens to the fourth lens has refractive power. A total effective focal length f of the optical imaging lens assembly and an effective focal length f1 of the first lens satisfy: 2.0<f1/f<6.5. A center thickness CT3 of the third lens along the optical axis and an edge thickness ET3 of the third lens satisfy: 2.5<CT3/ET3<4.0.

A single-motor electrically powered bed includes: a bed board, a frame, a slide assembly, a first connecting-rod mechanism, and a drive assembly; the bed board includes: a first bed board and a second bed board, one end of the first bed board being hingedly connected to one end of the second bed board; the second bed board is slidably connected to the frame by means of the slide component, the two ends of the first connecting-rod mechanism are hingedly connected to the first bed board and the frame, respectively, and the first bed board can be raised and lowered by means of the drive assembly. The single-motor electrically powered bed needs only one drive assembly to drive all of the bed boards to move, adjust the position and height of the human body, and achieve the lifting and lowering function of the electrically powered bed.

Single-motor electrically powered bed

Disclosed are a colorimeter and a reflectivity measuring method based on a multichannel spectrum. The colorimeter includes a main unit and a calibration box, wherein the main unit includes an integrating sphere, a light source and a main sensor, a detection hole is formed in one side of a top of the integrating sphere, a light-through hole is formed in a side of the integrating sphere, and a measuring port is formed in a bottom of the integrating sphere, the light source is arranged outside the light-through hole, and the main sensor is arranged outside the detection hole; the calibration box includes a housing and a white board arranged at a top of the housing, the white board is correspondingly matched with the measuring port, and the calibration box is connected with the main unit; the sensor is a multichannel spectral sensor.

Colorimeter and reflectivity measuring method based on multichannel spectrum

Disclosed are a dual-optical-path spectrophotometer and a color measurement method thereof. The spectrophotometer includes an integrating sphere, a light source, and a sensor. A second shutter, a semi-reflecting and semi-transmitting device and lenses are arranged between the detection hole and the sensor, and a light guide device and a first shutter are arranged between a light guide hole formed in the integrating sphere and the semi-reflecting and semi-transmitting device. The color measurement method includes the following steps. A first shutter is closed, a second shutter is opened, light, reflected by the measuring opening, enters a sensor and the sensor measures a spectral reflected signal of the object surface. The first shutter is opened, the second shutter is closed, reflected light enters the sensor, and the sensor measures a spectral reflected signal of a light source. A final sampled signal is calculated.

Dual-optical-path spectrophotometer and color measurement method thereof

Embedded fan for bed

Car seat cover for front seat

Growing community of inventors

Zhejiang, China

Jian Wang