N a technique for climbing cracks by pulling on one side of the crack with the hands and pressing on the other with the feet 侧拉; 一种攀岩技巧 [mountaineering]
Shoulders should be long and sloping, with a layback of 45 degrees and be firmly set.
肩胛长而倾斜，向后倾斜约45度角，且位置稳固。
This paper describes three positioning modes of towing equipment in marine survey, the board-hanging mode, LAYBACK mode and ultra-short baseline mode.
介绍了海洋调查中测量设备拖曳体（拖鱼）的三种定位方法：舷挂式、LAYBACK方式和超短基线方式；
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