研究结论是推进剂消耗量是一个重要成本因素。
It is concluded that propellant consumption will be a major cost factor.
如何消耗最少的推进剂完成交会对接，也是重大考验。
Another major test is how to consume the least possible propellant while achieving rendezvous and docking.
每小时60英里的加速只消耗船上氙推进剂37盎司，推进剂还得继续坚持。
Accelerating 60 mile per hour consumes a mere 37 ounces of the xenon propellant on board, and that propellant has to last.
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