This article analysis the reason of clamping breakdown to the hydraulic valve, and proposed the reasonable solutions in this foundation.
对液压阀产生卡紧故障的原因进行了分析，并在此基础上提出了合理的解决方法。
2
According to preliminary investigations by concerned parties, the cause of the failure was that the satellite's apogee engine was unable to normally operate because of a breakdown in the fuel valve.
据有关方面初步调查，卫星的远地点发动机因燃料阀发生故障不能正常运转是造成失败的原因。
3
A simulation experiment of small break loca is introduced, which was caused by the breakdown of a small size or middle size pipe located at upper plenum, or by unexpected opening the safety valve.