Model outline diagram (IMAGE) Beijing Institute of Technology Press Co., Ltd Caption The cable that passes through the small opening is 20 mm. This structure is simplified, with only the bodies of the large/small modules, small holes between modules, cables, openings on the large module, and baffles remained, as shown in the Figure. Credit Space: Science & Technology Usage Restrictions News organizations may use or redistribute this image, with proper attribution, as part of news coverage of this paper only. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.