PEMFC is an electrical device which directly converts chemical energy of fuel and oxidant to electricity.

One advantage of SOFC is that hydrogen and carbon dioxide are as fuel in the cell.

燃料电池装置是能以高效率低污染的方式将化学能直接转换成电能和热能的一项正在迅速发展的技术.

Chemical energy amy be converted to heat.

化学能可能转化为热能.

All the chemical energy of the fuel is not converted into heat.

并非燃料中的所有化学能都可转为热能.

Chemical energy is converted into heat when fuel burns.

燃料燃烧时,化学能就转换成热能.

A battery, by contrast, stores what is known an electrochemical potential.

电池却与电容相反, 据我们所知它储存的是电化学能.

Make use of chemical energy effectively, and transform it into mechanical energy.

有效地利用化学能, 使其转换成机械能.

Chemical energy may be converted to heat.

化学能可以转化为热能.

They point to the lack of social-security provisions for peasants.

他们指的是农民社保体系的缺乏.

Company buy the social security and health insurance for every body.

公司会为每个员工买社保和医疗保险.

There are several obstacles for social security funds investing money market.

我国社保基金进入货币市场还存在著不少障碍.

That means Congress can anything it wishes with Social Security.

这意味着国会可以肆意操纵社保金.

How are Senators and Representatives elected?

参议员和众议员是如何选举的?

Name your U.S. Representative.

问:列举你选区所在的众议员.

A senator takes precedence over a Representative.

参议员的地位高于众议员.

The number of the House from each state is determined by the population of the state.

每个州的众议员数由各州的人口决定.

Congresswoman Maxine Waters assumed responsibility for coordinating the gathering.

众议员玛克辛·沃特斯承担了协调这次聚会的责任。

Necessary permits are piling up for sale two years got Poly City: walk is worth chess?

打桩要打两年拿到预售许可证还不开售保利城: 走的是啥棋?

The new estate is open for sale now.

那个新的楼盘现已开售.

You can see the people passing by while you eat.

吃饭时还可看到川流不息的人流.

Did you fix it? It's amazing! It is such a mouth-watering cake!

是你自己做的 吗 ?太了不起了! 真是让人流口水的蛋糕!