（英文版的物理）Water heater that make use of the Sun often have solar panels mounted on the roof.(a)Why are copper pipes being used?(b)Why are the copper pipes and the metal sheet black in colour?(c)Why is there an insulation sheet under the

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（英文版的物理）Water heater that make use of the Sun often have solar panels mounted on the roof.(a)Why are copper pipes being used?(b)Why are the copper pipes and the metal sheet black in colour?(c)Why is there an insulation sheet under the

（英文版的物理）Water heater that make use of the Sun often have solar panels mounted on the roof.(a)Why are copper pipes being used?(b)Why are the copper pipes and the metal sheet black in colour?(c)Why is there an insulation sheet under the
（英文版的物理）Water heater that make use of the Sun often have solar panels mounted on the roof.
(a)Why are copper pipes being used?
(b)Why are the copper pipes and the metal sheet black in colour?
(c)Why is there an insulation sheet under the metal sheet?

（英文版的物理）Water heater that make use of the Sun often have solar panels mounted on the roof.(a)Why are copper pipes being used?(b)Why are the copper pipes and the metal sheet black in colour?(c)Why is there an insulation sheet under the
太阳能热水器通常把太阳能板安装在顶部.
1）为什么要用铜管?
因为铜管更易于导热：
For its good thermal conductivity
2）为什么铜管的和金属片是黑色的?
黑色有利于吸收热量.
Black pipes are easy to absorb heat.
3）为什么金属板下面要有隔热板?
防止热量从底部散去.
To reduce the energy loss from bottom
这题好怪啊,楼主是不是没把所有东西打出来啊?

（英文版的物理）Water heater that make use of the Sun often have solar panels mounted on the roof.(a)Why are copper pipes being used?(b)Why are the copper pipes and the metal sheet black in colour?(c)Why is there an insulation sheet under the 麻烦翻一下英文作文- -~~千万别拿电脑翻译...!题目：The environmental protection at home要求有这几点：该做的：use solar water heater,collect paper and bottles ande sell them.等等..不该做的：use electric water heater turn down your water heater Solar Water Heater 读音Solar Water Heater 是太阳能热水器的意思吗?我想知道它的读音,最好用拼音拼出来,音标也要谢谢 heater water the 花朵（英文）water的过去式怎么写? we use the heater to make the room warm 的同义句将we use the heater to make the room warm 改为同义句为：we （ ） the heater（ ）the room warm. 怎么回答这个英文信“I am interest with the Solar Water Heater products and like to visit your company between 27 to 21st July.”我想回复的大概内容是十分欢迎他来参观我们公司,哪位朋友帮忙用英文写下啊喂， heater high 传真机上出现的 hyd' heater是什么电气设备上的 bayonet heater什么意思（工程） 什么是forced air heater和convection heater?有什么不一样,他们的中文译名是什么? 东风日产.发动机继电器盒里的ASCD、N＆P.HEATER MIRROR.最好能把日产的全部保险盒英文解 开水的英文是什么?hot water? 为什么花露水的英文名叫toilet water? 为什么花露水的英文名叫toilet water? 物理的英文 物理的英文怎么说?