Vertical caving using ladders or SRT ( Single Rope Technique(SRT) ) to avoid the need for climbing passages that are too difficult. 垂直洞穴探索使用梯子或SRT(单绳技术(SRT))来避免攀爬太困难的通道。
Analysis of Shear Grab with Un-Powered Single Wire Rope and Remote Controlled Technique 遥控单索无动力开闭抓斗技术分析