紧实度是铸型术语，是湿型粘土砂及砂型的重要性能指标。
撕裂的肌肉会收缩，丧失原来的力量、结构和紧实度。
Torn muscles retract, and lose strength, structure, and tightness.
基于螺线管原理的位移探测器用于完成型砂紧实率及铸型紧实度的快速检测。
A displacement sensor based on solenoid principle is used to measure green sand compactibility and mould compaction.
研究者还特别留意了女性们前额以及脸颊皮肤的紧实度，并且运用X光测量了骨质的密度。
They also noted the firmness of the skin on the women's foreheads and cheeks, and used X-rays to measure the density of their bones.
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