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There are a lot of variable factor in Liquid hydrogen filling system-related risks of spaceport. This paper regards liquid hydrogen filling system as a study object, using RFRM method. Through the six main analyses phase of the eight stages of RFRM method, it conducts a risk analysis of the system, and reaches the level of risk in different circumstances.(More)
In this paper, we introduce some external parameters to attempt to build a suitable standard and to increase automation for quality evaluation of the CBERS-02B high spatial resolution image. The image quality of CBERS-02B was compared with SPOT-5 and P5 satellite in two ways of subjective evaluation and external evaluation. The subjective results show that(More)
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