他们采集粉末从陨石，处理它用水，在高温度和压力下，并分析产生的化合物。
They collected powder from the meteorite, treated it with water at high temperature and pressure, and analyzed the resulting compounds.
分级时效处理，低温下先让合金内部的宏观应力松弛，再在较高温度下时效，可有效地避免棒材纵向开裂。
However, stepped aging, which relaxes internal macro-stress under lower temperature then ages under higher temperature, can avoid longitudinal cracks effectively.
针对高温度精度空调系统和净化空调系统，分析了夏季空调处理过程中再热量的计算方法。
Analyses the calculating method of reheating capacity in air handling process in summer for high accuracy constant temperature air conditioning system and air cleaning systems.
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