Now you have this situation where you have a droplet that is net negative or perhaps net positive.

现在的情况是那些液滴，可能是净负电，也可能是净正电。

youdao

Dominici said the quasi-experimental approach was a good approximation of a randomized experiment, "especially in this situation where a randomized experiment is not possible. ""

多米尼西说准实验法是近似一个随机实验的很好方法，“尤其是在这种不可能做随机实验的情况下。”

youdao

Dominici said the quasi-experimental approach was a good approximation of a randomized experiment, "especially in this situation where a randomized experiment is not possible. ""

多米尼西说准实验法是近似一个随机实验的很好方法，“尤其是在这种不可能做随机实验的情况下。”

youdao