目的研究器质性环咽肌压迹与老龄化是否有相关性。

Objective to study whether a physical cricopharyngeal bar is related to aging.

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该套环适合于和医疗设备压配合。

The collar is adapted to press fit with a medical device.

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本夹具在固定蝶形试样上下两端，使之成垂直状，搭配环压试验机可测试竖压强度。

This grip is working with ring crush tester to test the column compression strength.

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本夹具在固定蝶形试样上下两端，使之成垂直状，搭配环压试验机可测试竖压强度。

This grip is working with ring crush tester to test the column compression strength.

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