supplying the rocket fuels for its ships, easily obtainable from the lunar rocks in the form of liquid oxygen.
从月球上的岩石中很容易提炼出液态氧,作为航天飞船的燃料。
Oxygen enriching membranes are first prepared from room temperature thermotropic cholesteric liquid crystal and ethyl cellulose.
首创了室温热致胆甾液晶与乙基纤维素共混富氧膜.
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