重大故障 meaning in English

significant trouble

Produce the heavy riveting machine and gantry riveting machine replace new one if big hitch occur
国内唯一承诺一年重大故障免费更换的铆接机厂家
When life - threatening accidents occur before the jettisoning of fairing , escape system will bring the astronauts to safety . escape system includes the escape tower and upper fairing
当运载火箭在抛整流罩前发生威胁太空人生命安全的重大故障时，逃逸系统肩负把太空人带离危险区的重任。
Hospitals have been hit by 110 " major incidents " in four months as the health service ' s ? 12 billion computer system expands nationally , a report claims today
译文：今天一篇报道称，自健康服务中心在全国范围内推广价值12亿美元的计算机系统以来，四个月内发生了110个重大故障使医院遭到重创。
Malfunctioning detection and management system and escape system are installed for the safety of astronauts . before the spacecraft enters the orbit , the conditions of the rocket will be closely and constantly monitored . if fatal problem occurs , the systems will help the spacecraft to leave the danger zones
故障检测处理系统和逃逸系统是为确保太空人的安全而设，其作用是在飞船入轨前，监测运载火箭状态，若发生重大故障，使载有太空人的飞船安全地脱离危险区。