The result reasonably explains the phenomenon that the behavior of ground pressure is very strong even under the very loose roof and can be referred for further studies in similar conditions.

研究结果合理解释了顶板极其松软、矿山压力显现且相当剧烈的现象，对国内类似开采条件下的矿压显现规律研究可资参考。

youdao

A loose slate had fallen from the roof.

一块松动的石板瓦从房顶上掉了下来。

《牛津词典》

The denture doesn't fit, it's loose, look at the roof of your mouth. Do you see how red and inflamed it is?

假牙不太合适，有点松。请看看您的上腭，看到发红和发炎的地方了吗？

youdao

Westwood was only able to parry Jack Colback's low drive, with Fallon on hand to fire the loose ball into the roof of the net.

BBC: Sport - Football - Coventry 1-1 Ipswich

Update the roof: repair loose shingles and if your abode sits in a hurricane-vulnerable locale, consider adding gable end braces.

FORBES: As 'Frankenstorm' Threatens, Last-Minute Ways To Disaster-Proof Your Home

The danger was compounded by an overhead power cable, which broke loose and fell on the roof of the rear car, causing further arcing and a large amount of smoke inside the train.

BBC: Metro train fire