Yangtze Memory Technologies Co., Ltd.

Wuhan Construction Engineering Group Co., Ltd.

Changjiang River Scientific Research Institute, Changjiang Water Resource Commission

Yangtze Optical Fibre and Cable Joint Stock Limited Company

Jun He

Li Wang

Shan Li

Yaobin Feng

Wei Yang

Shuai Wang

Chen Liu

Wenxiang Li

Tong Lu

Mingzhao Wang

Ming You

Yunjie Dong

Xiaolong Yang

Shuling Huang

Chen Qian

Xiuli Ding

Keyang Wu

Yuanbang Ge

Zhi Yang Song

Dengxue Liu

Zhi Hu Gao

Wenhui Xiong

Yuting Zhang

Yangjun Xu

Dou Dou Zhang

Zongyou Hu

Peiyang Yu

Zhendong Du

Jin Yu Qiu

Gang Han

Xingxing Lu

Feng Chen

Yunfang Ruan

Zhuang Xiong

A multi-tower linkage type aerial hoisting platform includes: four tower crane body lifting/lowering parts respectively disposed in an outer periphery of a building to form a rectangle through enclosure, and including a tower crane body and a self-climbing lifting/lowering system that is capable of climbing or descending step by step along the tower crane body; four tower-crane-body-connected support beams, respectively disposed on two opposite self-climbing lifting/lowering systems, where a hoisting platform enclosed by the tower-crane-body-connected support beams is driven by the self-climbing lifting/lowering systems to move up and down synchronously; and four movable tower crane bases, respectively disposed at lower ends of the four tower crane body lifting/lowering parts, including movable chassis that are used as movable supports with a variable platform angle and support parts disposed on the movable chassis, where four corners of the support parts are respectively provided with rotary drilling fastening parts.

Multi-tower linkage type aerial hoisting platform

The invention discloses an experimental system of surrounding rock and lining structure under unequal surrounding pressure and water pressure, comprising: reaction wall, lining structure, external water pressure loading mechanism, internal water pressure loading mechanism, prestress-loading mechanism, surrounding rock layer and monitoring device. The Experimental System can simulate the stress characteristics and related deformation characteristics of the surrounding rock of the tunnel and the lining structure of the water conveyance tunnel under complex internal and external loads in the actual environment, and can help to analyze and study the broken appearance of the lining structure and the crack distribution after cracking.

Experimental system of surrounding rock and lining structure under unequal surrounding pressure and water pressure

Embodiments of semiconductor fabrication methods are disclosed. In an example, a method for forming a mark for locating patterns in semiconductor fabrication is disclosed. A wafer is divided into a plurality of shots. Each of the plurality of shots includes a semiconductor chip die. Four quarters of a locking corner mark are subsequently patterned, respectively, at four corners of four adjacent shots of the plurality of shots. Each quarter of the locking corner mark is symmetric to adjacent quarters of the locking corner mark and is separated from the adjacent quarters of the locking corner mark by a nominally same distance. The locking corner mark is set as an origin for locating patterns in at least one of the four adjacent shots in semiconductor fabrication.

Marks for locating patterns in semiconductor fabrication

Growing community of inventors

Wuhan, China

Jun He