单词	roof-falling mechanism
释义	roof-falling mechanism 冒顶机制
随便看	auxiliary flight control auxiliary float auxiliary floating dock auxiliary floating dry dock auxiliary floating drydock big auxiliary floating drydock little auxiliary floating drydock middle auxiliary floor area auxiliary flotation bag auxiliary flow auxiliary flow line auxiliary fluid auxiliary fluid coupling auxiliary fluid ignition auxiliary fluid jets auxiliary flux auxiliary folding of sheets auxiliary folding of sheets, webs auxiliary follow up piston auxiliary follow-up piston auxiliary force auxiliary forces auxiliary for chrome tanning auxiliary forest belt auxiliary foundation