氢气的

But hydrogen is not easy to make, for producing it by amylum glucose is of too high a cost, while the method of decomposing organic material by bacteria is hard to industrialize

但是氢气不容易制取，用淀粉葡萄糖产生氢气的成本太高，细菌降解生物物质的方法又难以工业化。

One of the challenges with hydrogen production is the cost of compressing and transporting hydrogen from central locations.

氢气生产的所面临的一个很大的挑战是在能源中心压缩和运输氢气的成本问题。

Oxygen that is evoluted in the anode and arsenic acid will have oxidation-reduction to produce arsenic acid. It can evolute a great amount of hydrog...

在铜含量较低时阴极析出大量氢气，阳极析出氧气，极大地浪费了电能；在析出氢气的同时逸出砷化氢，砷酸、亚砷酸在阴极直接发生还原反应也产生砷化氢气体，从而严重地污染了环境。

From the view of hydrogen selectivity, ZnCl2 ranks first, K2CO3 second and Raney-Ni third. However, Raney-Ni is most favorable to gasify biomass, its gasification efficiency reaches 126.84%, and it can earn 34.37g hydrogen by gasifying 1kg biomass.

结果表明，ZnCl2对氢气的选择性最高，K2CO3次之，Raney-Ni最低，但在低温条件下Raney-Ni最有利于生物质的气化，气化率高达126.84%，氢气产率高达34.37gkg^(-1)。

In France in 1783 Montgolfier brothers made charge Egypt shortly after the hot air balloon, he made the first hydrogen filling of the balloons, in August 27 was the first time the ball off the charge of hydrogen. December 1, and N.

1783年在法国蒙戈尔费埃兄弟制成热空气气球后不久，他制成第一个充氢气的气球，在当年8月27日第一次实现了充氢气球升空。12月1日他和N。

UtilityThis compressor basically is used at hydric pressure boost, make below pressure gas is able to flow, apply to the hydric dehumidify loop is hydric power source inside machine of set of electric machinery of hydric Leng Shifa.

本缩小机重要用在氢气的增压，在压力下使气体可以流荡，适用在氢气冷式发电机组机内氢气除湿循环氢气的前进力源。

The conducting wall in micro-tube preheats the inlet mixture by axial heat transfer. The existence of conducting wall will help to reach full reaction in the micro-tube. As the inlet velocity increases, both the existence of the surface catalytic combustion and the gas phase combustion become the limiting factors on combustion. Wall material and equivalence ratio of hydrogen/air mixture have important influence on catalytic combustion of hydrogen.

计算结果表明：表面催化反应对空间气相反应有抑制作用；在微型管道内，通过导热壁轴向间的传热，预热入口混合气体，使氢气燃烧更加充分；随着入口速度的增大，燃烧过程同时存在着表面催化反应和空间气相反应两种控制因素；管壁材料和当量比对氢气的催化燃烧过程有重要的影响。

Target uses for fuel cell vehicles, stationary fuel cell and hydrogen gas stations and other areas of the use of hydrogen.

目标用途为燃料电池汽车、固定式燃料电池以及氢气站等使用氢气的领域。

Hydrogen recombiners and igniters are two promising hydrogen mitigation systems for use during severe accidents in nuclear power plants.

氢气点火器与氢气复合器是两种消除严重事故安全壳内氢气的设备。

The industrial method for making hydrogen are:(1) Water electrolysis, with nickel plating 15% of the iron electrode electrolytic potassium hydroxide solution;(2) from natural gas or liquefied petroleum gas system for hydrogen cracking;(3) water gas law, namely the system of hydrogen from coke or anthracite.

氢气的工业制法主要有：（1）水的电解，用镀镍铁电极电解15％的氢氧化钾水溶液；（2）从天然气或裂解石油气制氢气；（3）水煤气法，即从焦煤或白煤制氢气。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。