拧紧背面的固定环型螺帽。
木板背后钉入三角环悬挂架，用不锈钢吊索固定。
On back of board, nail in ring hangers and tie on hanging wire.
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.
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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