为了避免由于发动机尺寸的减小而带来的微燃烧问题，采用高压气体作为动力源；
To avoid the affection of micro-combustion due to reducing engine's scale, high-pressure gas was used to drive engine.
他最大的缺点是由于这口井的尺寸固定，因此不可能换装更大的舷外发动机。
The biggest disadvantage is usually that because the well has fixed dimensions, it is impossible to install a larger outboard.
通过数理统计分析确定了存放天数指标，并在批量生产中有效地控制了全尺寸固体发动机燃速性能。
Determining the index of days through the analysis for mathematical statistics, and controlling effectively the burning-rate performance of the full-size solid engine.
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