否运动是相对于参考系而言的。

Whether an object is moving or not depends on its reference system.

本文建立了母体参数 的坐标参考系；

This paper establishes the parameters of mother-to coordinate reference system;

假定这个参考系自身是静止的。

Presumably that reference frame is itself at rest.

流动场的计算采用多重参考系法。

The Multiple Frames of Reference (MFR) method was adopted for the simulation.

其实说运动和静止取决于参考系。

The answer of this question in fact depends on the frame of reference.

在惯性参考系中。

In the reference frame...

惯性参考系也就是不存在任何,形式加速度的参考系,有可能吗？

And an inertial frame of reference would then be a frame in which there are no accelerations of any kind Is that possible?

所以很明显教室不能作为惯性参考系。

So clearly 26.100 is not an inertial reference frame.

第二定律如第一定律,也只在惯性参考系下成立。

Like the First Law, the Second Law only holds in inertial reference frames.

例如，它并不在具有,加速度的参考系中成立。

For instance, it doesn't hold in a reference frame which itself is being accelerated.