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1·At the end of the blowoff period, a reverse procedure should be used.

在放气将要结束时，在进行相反的操作。

2·By calculating and analysing the process of material radiated by pulsed X ray a numerical model that calculates the blowoff impulse generated in solid material by pulsed X ray radiation is given.

通过对X射线辐照后材料运动过程的数值模拟和分析，提出了一种计算汽化反冲冲量的数值计算公式。