第一定律发现于，17世纪上半叶。
The first law really goes back to the first part of the 17th century.
教授：上一次我们谈到,热力学第一定律。
PROFESSOR BAWENDI: Last time you talked about the first law of thermodynamics.
这是热力学第一定律。
第一定律非常乐观。
戈森的“需求第一定律”及其影响。
与第一定律相符。
热力学：第一定律，内能，工作，热。
能量守恒这一概念是热力学的第一定律。
The idea that energy is conserved is the first law of thermodynamics.
我会说“根据第一定律，你们肯定也感觉到了推力。”
I say, "Aha, the First Law should work so these people should feel a push."
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.
生态学第一定律就是所有生命都依赖其他生命。
The first law of ecology is that everything is related to everything else.
按牛顿第一定律的说法就是物体本身具有的属性。
By Newton's first law to say that the properties of the object itself.
二除非违背第一定律，机器人必须服从人类的命令。
Two unless the contrary to the first law, the robot must obey the orders.
这是一个相当有用的表述，是热力学第一定律的另外一种形式。
Fairly powerful statement, and that's another form of the first law of thermodynamics.
像第一定律一样，第二定律是由经验归纳得出的结果。
Like the first law, second law is a generalization from experience.
这是热力学第一定律的一个抽象，而且具有很强数学性的表述。
This is an abstract and powerful mathematical statement of the first law of thermodynamics.
第一定律（轨道定律）：所有行星都沿各自的椭圆轨道运动，太阳在该椭圆的一个焦点上。
The orbit of every planet is an ellipse with the Sun at a focus.
第一定律（轨道定律）：所有行星都沿各自的椭圆轨道运动，太阳在该椭圆的一个焦点上。
The orbit of every planet is an ellipse with the Sun at a focus.
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