前言捕获、缓冲、拉近、锁紧,当神舟八号与天宫一号经过4个步骤顺利完成对接时,我国载人航天也成功实现了空间交会对接技术的突破。这是继天地往返、出舱活动之 Foreword Capture, buffer, narrow, lock, when the Shenzhou VIII and Tiangong-1 successfully completed docking in 4 steps, our country’s manned space flight successfully achieved a breakthrough in docking technology. This is the second heaven and earth, out of space activities