When you start a V-8 engine, you are only driving two cylinders (1 liter) through their compression strokes, but with one big cylinder you would have to compress 4 liters instead.

当你启动V - 8发动机时，只是通过压缩冲程驱动了两个气缸(1升)，但是如果是一个大气缸你必须要压缩4升。

youdao

Start by copying (CTRL + c) the mapping in one file, go to the new file, select the new source and target fields (using the CTRL key to multi-select), and then invoke the paste action (CTRL + v).

首先在一个文件中(CTRL + C)复制映射，转到新文件，选择新的源和目标字段(使用ctrl键选择多个项)，然后调用粘帖操作(CTRL + V)。

youdao

v So -- So if the gradient vector is perpendicular to v OK, that's a good start.

所以梯度向量垂直于,很好，这是一个很好的开始。

youdao

So we're going to start with a mole of gas, V at some pressure, some volume, T temperature and some mole so V, doing it per mole, and we're going to do two paths here.

假设有1摩尔气体，具有一点的压强p，体积，温度，我们将让它，经过两条不同的路径。

麻省理工公开课 - 热力学与动力学课程节选