useful beam造句

例句与造句

1. The useful beam diameter is also approximately 1 / 3 of the gap.
2. Pa穖, since at higher values no useful beam is transmitted through the gas layer to the specimen surface.
3. For example, most wood species score better than most metals on this metric, but many metals can be formed into useful beams with much thinner walls than could be achieved with wood, given wood's greater vulnerability to local buckling.
4. It's difficult to find useful beam in a sentence. 用useful beam造句挺难的