impaction
[im'pækʃən]
n. 装紧, 压紧
例句与用法：
These bullets fragment on impact.
这些子弹射中物体时爆炸成碎片。
The plane flew into a mountain and disintegrated on impact.
飞机冲向一座山，撞得粉碎。
The front of the car crumpled on impact.
汽车的前部被撞扁了。
A barrier that protects a harbor or shore from the full impact of waves.
防波堤，防浪墙保护一个港口或海岸以防波浪冲击的障碍物
It's difficult to assess the impact of the President's speech.
总统讲话的巨大影响很难估计。
词形变化：
名词: impaction | 动词过去式: impacted | 动词过去分词: impacted | 动词现在分词: impacting | 动词第三人称单数: impacts |
详细释义：
n.
装紧; 压紧