And do you find that you have like an even distribution of those four types within any one class or...?

那你认为每个班的学生类型是平均分布的还是… … ？

The machine's design and the placement of its three mowers provide even weight distribution.

该机器的设计和三台割草机的放置提供了均匀的重量分布。

In the late 19th century, ventilation techniques largely focused on negative pressure, which closely approximates natural breathing and provides an even distribution of air in the lungs.

十九世纪晚期的呼吸机技术主要为负压式呼吸，这一过程模拟了自然呼吸，并保证了肺部均匀的空气分布。