Here were bugs that created hydrazine, an extremely unstable compound, used as rocket fuel, that is poison to most living things.
这些微生物可以产生一种叫联氨的极不稳定的化合物，联氨通常作为火箭燃料，对多数的生物都是有毒害的。
Scientists at the Centers for Disease Control and Prevention tested the formula for the presence of perchlorate, a chemical used as the main ingredient in solid rocket fuel.
疾病预防控制中心的科学家专门针对高氯酸盐对配方奶进行了检测。
Water is not only used as a key ingredient of human subsistence but also a source of oxygen and rocket fuel necessary for the human lunar bases.
水不仅是宇航员在月球上的重要生存资源，还是月球基地所需氧气和运载火箭燃料的来源。
The liquid fuel rocket, which is continually being improved, is used in aircraft as well as for research in the upper air and for putting earth satellites into orbits.
液态燃料火箭不断得到改进，它用在飞行器上，也被用来研究高层大气和把地球卫星送入轨道。
The liquid fuel rocket, which is continually being improved, is used in aircraft as well as for research in the upper air and for putting earth satellites into orbits.
液态燃料火箭不断得到改进，它用在飞行器上，也被用来研究高层大气和把地球卫星送入轨道。
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