clamponn.夹紧adj.夹合式clampn.夹子；螺丝钳vt.夹住；强加；压制clamped amplifier箝位放大器clamping cylinder夹紧缸clamper amplifier信号电平固定放大器clamping coupling壳形联轴节,夹壳联轴器clamped joint seal夹持型接头密封clamped-end beam固支梁, 嵌入梁clamping mechanism夹紧机构clampshell dredger蛤壳戽斗挖泥机clamping operation箝位运用clamped connection夹紧连接

1. To prevent damage, the observer will choose a friction clamp or better still an adjustable clamping ring.
   为防止损坏，观测者应采用摩擦夹紧方式，用可调夹圈更好。