惯性运动

The class of all possible motions is the same in all inertial frames.

在所有的惯性参照系中可能出现的运动全都是同一种类的。

The same laws of mechanics apply to all inertial systems moving relative to each other.

在所有作相对运动的惯性系中都可以应用同样的力学定律。

The focus of Lesson 1 is Newton's first law of motion - sometimes referred to as the law of inertia .

第一节的核心任务是学习牛顿第一运动定律，有时也叫做惯性定律。

Here is a different state of affairs from classical mechanics, where absolute uniform motion is quite meaningless because of Galileo's law of inertia.

这里的情况跟经典力学不同，在经典力学中，由于伽利略惯性定理的关系，绝对的匀速直线运动是毫无意义的。

Take F=0 which governs the matter as an example, it is Newton's first law of movement, i.e. law of inertia. In the field of invisible spirit, in fact, this is the so-called "attachment to form" in the Diamond Sutra.

以掌握有形物质的理 F=0为例， F=0在有形物质是牛顿第一运动定律，也就是惯性定律，在无形精神事实上就是金刚经的「著相」。

The mentioned control scheme can effectively control two joint of space manipulator to stably track the desired trajectory in joint space. It has obvious advantages that with needless feedback and measured the position, velocity, acceleration, attitude angle velocity and attitude angle acceleration of the floating base. At the same time, no requirements for the dynamic equations of the system are linearly dependent on inertial parameters.

文中提到的控制方案能够有效地控制漂浮基空间机械臂的载体姿态及机械臂关节，可以协调地完成期望的轨迹运动，并具有不需要反馈和测量空间机械臂载体的位置、移动速度、移动加速度，同时也不要求系统动力学方程关于系统惯性参数呈线性函数关系的显著优点。

More issue, you could refer to the exercises of chapter 2 by Weinberg, where Weinberg ask you to calculate the spin transformation under Lorentz transformation.

我的意图是把质量归于被囚禁的光速运动能量，从而假定我们所在的真空背景平均宏观速度相对于任何惯性系都为零。

Using the basic dynamic equation of rotary non-inertial system, the basic law of object s movement in the reference system of rotating about fixed axis , and the conditions of momentum conservation and conservation of momentum moment of objects are educed.

利用旋转非惯性系中的基本动力学方程，导出在定轴旋转参照系中物体运动的基本规律，以及物体动量守恒和动量矩守恒的条件。

According to the law of mass moment of inertia and of momentum moment, the conditions for the complete dynamic balance of rotor inertial forces and moment of inertia in the rotary piston vacuum pump are put forward, with the rotor movement in single cylinder analyzed as basis.

根据质量矩定理和动量矩定理对单缸滑阀真空泵的转子运动状况进行了分析，分别提出了转子惯性力和惯性力矩完全动平衡的条件。

Explain this in terms of inertia and Newton's first law of motion.

请用所学的惯性和牛顿第一运动定律的知识作出解释。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。