机械能

大声点。，LEWIN：，So，speak，up。，我们可以尝试用，机械能守恒定律吗？，这样用有什么问题吗？

LEWIN Shall we try the conservation of mechanical energy Is there anything wrong with that ?

？，So，now，what，is，h2？，Well，根据机械能守恒，我们知道，我们把点A的，重力势能，称之为。

H2 = we could now use the conservation of mechanical energy , and we could say , let us call arbitrarily the gravitational potential energy at point A , 0 let 's call that zero .

分子马达通过催化三磷酸腺苷分子（ATP）水解，将化学能转化为机械能产生自身的定向运动。

During hydrolization of ATP , conformational changes occur within the motor protein ( a mechanochemical process ), and mechanical work is done .

利用扫描电镜、能谱仪、X射线衍射仪以及自行设计制造的机械能助渗装置和自己开发的渗铜剂，研究了机械能助渗铜工艺及其组织结构。

The mechanical energy aided copperizing process is studied by using the equipment and agents which are developed by ourselves , the structure of the copperizing layer also is studied by SEM , energy spectrometer , X-ray diffraction spectrometer etc.

分子马达一般是以ATP或GTP为能源将化学能转化为机械能，从而完成生物体内的各种功能。

Molecular motors use ATP or GTP as energy sources and execute diverse biological functions by changing the chemical energy deposited in ATP or GTP to mechanical energy .

PZT铁电薄膜是实现机械能向电能转换的关键，本文采用溶胶&凝胶法来制备PZT铁电薄膜。

This result can be used to design and manufacture the cantilever beam in the future . PZT ferroelectric film is a key technique for the conversion of mechanical energy to electrical energy .

如何能够将热能高效的转换成机械能同时尽可能的降低排放物中的NOx和碳烟的含量一直是现代机械工程中的核心问题。

How to convert the thermal energy to the mechnical energy efficiently and how to reduce the content of the NOx and soot in the discharge are the main problems in the mechanical project now .

鞭毛电机（BFM）是微观世界里的一种分子旋转电机，其利用H+的电化学势能转化为机械能推动转子旋转。

Bacterial flagellar motor is a kind of revolving molecular motor which converts electrochemical potential energy of H + into the mechanical energy of rotation .

电活性聚合物材料（EAP）是新型的电敏感材料，能直接将电场能量转换为机械能，具有高的能量密度，高效率和快速响应的优点。

Electroactive polymers ( EAPs ) are new electro-sensitive materials , behaving as actuators , changing their shape in response to electrical stimulation directly , possessing high energy density , high efficiency and fast response speed .

首先用运动学方法建立跑步运动机械能消耗分项计算模型和总机械能消耗模型，然后用仿真和实验的方法讨论了一个踏步的机械能消耗、并且模拟了100m运动员的全程机械能消耗过程。

According to kinematic method , the sub-models and total model about the mechanic energy loss of running are established . The mechanic loss during one step and the function of mechanic energy loss within the distance for 100m are discussed on the basis of simulation and experiment .

机械能是守恒的，因为重力是守恒力。

Mechanical energy is conserved , because gravity is a conservative force .

在不同惯性系中的机械能守恒定律

The Law of Conservation of Mechanical Energy in Various Frame of Reference

机械能方程的耗散积分解析表示式

Analytical expression of dissipation integral for kinetic energy integral equation

相对性原理及其对自然界定律的协变性要求&机械能守恒定律协变性疑难的解答

Principle of relativity and its requirement for co-variance of laws of nature

关于物体系机械能的讨论

A discussion about the mechanical energy of the objects system

它紧跟着，机械能，守恒定理而产生。

It follows immediately from the conservation of mechanical energy .

关于机械能的转化和守恒定律的一些问题

Questions on the Transform of Mechanical Energy and Conservation Law

具有完整约束的变质量系统的机械能守恒律

Conservation law of mechanical energy in variable mass systems with holonomic constraints

最后用力加速阶段输出的机械能总量下降。

At the end of the last phase , the outputting energy decreases .

地面上物体的机械能呼吸效应

On the respiration effect of mechanical energy of a body on the ground

一类特殊两体问题机械能守恒的判断

Determination of the conservation of mechanical energy for the restricted two body problem

我们相信，机械能守恒定理。

We believe in the conservation of mechanical energy .

把电能转化为机械能的发动机。

A motor that converts electricity to mechanical work .

功能原理和机械能守恒及转换定律

Function Principle Law of Conservation of Mechanical Energy Transfer

但是，机械能守恒，仅仅适用于保守力。

However , the conservation of mechanical energy only holds for conservative forces .

因此这是，机械能守恒。

So this is the conservation of mechanical energy .

有专门的细胞把化学能转变成机械能。

Specialized cells convert chemical energy into mechanical energy .

瀑布是机械能。

Mgh A waterfall is mechanical energy , mgh .

所以总机械能，守恒。

And so the total mechanical energy is conserved .

电动机就是把电能变成机械能的一种电机。

An electric motor is that which converts electrical energy into mechanical energy .