... □ Closed-end test (下止强力) □ Top-stop test (上至强力) □ Open-end fastener box test (插件移位强力) ...
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top-stop test
top-stop测试
以上为机器翻译结果，长、整句建议使用 人工翻译 。
In the light of analogue test in laboratory, the stability of roof of fully mechanized working face with top coal caving is studied during withdrawing support at stop line.
通过实验室相似模拟试验，对综放面收尾撤架空间的顶板稳定性进行了研究。
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