例句與造句

1. He observed that the maximum spark length was reduced when in the box.
2. When removed, the spark length would increase.
3. I heard that was limiting the spark length.
4. He observed no decrease in spark length when he substituted quartz for glass, as quartz does not absorb UV radiation.
5. It's difficult to find spark length in a sentence. 用spark length造句挺難的