collaring
1. 开炮眼：collar priming 孔口起爆 | collaring 开炮眼 | collect 收集
2. 缠辊：collargrab 打捞卡套 | collaring 缠辊 | collarlocator 接箍定位器
3. 缩颈：collar 轴;环;圈 | collaring 缩颈 | collet heater 吸具加热器
4. 打眼/轧件缠辊/缠辊现象：collarine /柱颈/ | collaring /打眼/轧件缠辊/缠辊现象/ | collars /辊环/