煤气

Flame observation: If it shown yellow in flame cone, blue around, and the opposite wall could be seen through peep hole, that means the blending ratio of air and coal gas is ok. If air excess, it shown sky blue, bright, and the wall of combustion chamber could be seen clearly but dulling. If coal gas excess, it shown dark red, muddiness, and the wall of combustion chamber could be seen hardly.

1火焰观察：从窥视孔观察燃烧室火焰，如果火焰中心呈黄色，四周微蓝，透明，清晰可见燃烧室对面砖墙，则为空气煤气配比合适；如果空气量过多，则呈天蓝色，明亮耀眼，燃烧室砖墙清晰可见，但发暗；如果煤气量过多，则呈暗红，混浊不清，难见燃烧室砖墙。

Ii. Tap water, heating, air conditioning, hot water, coal gas, lipuefied petroleum gas, naturalgas, methane gas, coal/charcoal products for household use

自来水、暖气、冷气、热水、煤气、石油液化气、天然气、沼气、居民用煤炭制品

Town gas and natural gas pipeline, flanges and internal threads used to connect the needle valve.

城市煤气和天然气的管路上，选用法兰连接和内螺纹连接的针型阀。

Hydrogen posses the octane number of 60-66 and it increases the ignition ability of producer gas.

氢具有的的60-66辛烷值，并增加了煤气发生炉点火能力。

He also including some, such as gas offtake station, variable power distribution room, heat exchange stations, public toilets, shelter, and other outdoor projects.

他同时还包括一些诸如煤气调压站、变配电室、热力交换站、公共厕所、自行车棚等室外工程。

We want to buy Petrochemical Products, Oil and Gas Field Equipment

我们要采购石化的产品，油和煤气田设备

B:The thing to keep in mind is that our oil and gas resources are limited.

我们应该牢记的一件事就是我们的石油和煤气资源是有限的。

Once the pan is on fire, the first thing you do is to turn the gas off .

一旦油锅着了，你首先该做的是把煤气关掉。

Once the pan is on fire, the first thing you do is to turn the gasoff .

一旦油锅着了，你首先该做的是把煤气关掉。

The detection technology of rate of flow of suitable option is the key that realizes the gas accurate detection of rate of flow.

选择合适的流量检测技术，是实现煤气流量准确检测的关键。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。