但问题是,如果离子没有顺利通过电极栅,而是撞在上面,将会造成电极的烧蚀,从而限制了其使用年限,美国宇航局离子发动机的平均寿命约为3年。
The problem is, ions that bump into the grid instead of passing through it cause erosion, which limits the average NASA ion engine's lifespan to about 3 years.
但问题是,如果离子没有顺利通过电极栅,而是撞在上面,将会造成电极的烧蚀,从而限制了其使用年限,美国宇航局离子发动机的平均寿命约为3年。
The problem is, ions that bump into the grid instead of passing through it cause erosion, which limits the average NASA ion engine's lifespan to about 3 years.
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