因为相互作用能，相比于热能要小得多。
Because the energy is so tiny compared to the thermal energy.
太阳能集热器是收集太阳热能的一种途径。
我们不但能把电能转化为热能，也能转化为光能。
We can turn electric energy into light energy as well as into heat energy.
热能在辐射时，转换成性质与光类似的辐射能。
In radiation, thermal energy is transformed into radiant energy, similar in nature to light.
热能在辐射时，转换成性质与光相似的辐射能。
In radiation, thermal energy is transformed into radiant energy, similar in nature to light.
它们是地热能、太阳能和风力。
化学能可以转变为热能。
它们是地热能、太阳能和风力。
热能穿过真空吗？如果能，它是怎样穿过的？
该系统能自动将光能转换成热能。
This system can convert light energy into heat energy automatically.
太阳能可以转换为热能、电能和化学能。
Solar energy can be transformed into heat energy, electricity energy and chemical energy.
化学能可以转化为热能。
露丝：一块太阳能电池板，真能产生足够热能吗？
Ruth: Can you really get enough heat from the panel to do that?
有各种各样的能，诸如热能、电能及化学能。
There are different kinds of energy such as heat energy, electric energy and chemical energy.
哪些活动显示化学能转换为光能和热能？
Which activities show the transformation from chemical energy to light energy and heat energy?
热能仅是几种能量中的一种，其他的能有电能、光能、化学能。
We can transform electric energy into light energy AD well as into heat energy.
电能可以被转换成热能、光能或化学能。
Electrical energy may be converted into heat, light or chemical energy.
电能可以被转换成热能，光能或化学能。
Electrical energy may be converted to heat, light or chemical energy.
电能可以被转换成热能、光能或化学能。
We can transform electric energy into light energy AD well as into heat energy.
热能仅是几种能量中的一种，其他的能有电能、光能、化学能。
Electrical energy may be converted to heat, light or chemical energy.
能把某些能量形式，如化学能、辐射能、热能等，转变成电能的单个装置。
We can transform electric energy into light energy AD well as into heat energy.
热能仅是几种能量中的一种，其他的能有电能、光能、化学能。
Electrical energy may be converted into heat, light or chemical energy.
电能和热能一样可以转化为机械能。
Electrical energy as well as heat can be converted into mechanical energy.
热是能的一种形式，其它一切能的形式都能改变为热能。
Heat is a form of energy into which all other forms are convertible.
热是能的一种形式，其它一切能的形式都能改变为热能。
Heat is a form of energy into which all other forms are convertible.
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