例句與造句

1. The amount of NOx is also a function of oxygen excess.
2. Lean mixture causes low voltage, since there is an oxygen excess.
3. In the second step a substantially higher oxygen excess is used, at approximately a factor of 4, which is then processed with the remaining CO, in order to reduce the CO concentration to less than 10 ppm.
4. It's difficult to find oxygen excess in a sentence. 用oxygen excess造句挺難的