查询词典 gas coal

Basedo the investigation and analysis of pollution in the artificial coal gas station area and its effect on afforestation,we knew that although there exist quite serious pollution in such area,different afforested plant is different to pollution esistance.

根据人工煤气站区存在的污染及其对绿化植物影响的调查和分析，我们得知：虽然在人工煤气站区内存在比较严重的污染，但不同的绿化植物对污染的抗性不同。

Proved by long time prevention work and scientific research that coal and gas outburst takes place suddenly but has a lot of auguries including AE before outburst.

长期的防治工作和科学研究表明，煤与瓦斯突出虽然是突发性的，但在突出前均有前兆显现，其中声发射就是前兆之一。

The invention provides a sulfur oriented adsorption control method for calcining active lime in a rotary kiln comprising the following steps: the rotary kiln calcines the massive limestone using the mixture of the coal fines and active lime fine silts as fuels, the sulfur in the flue gas is adsorbed using the sulfur adsorption and desulphurizing ability of the active lime fine silts, meanwhile the sulfur-adsorbed kiln dust is separated from the calcined active lime by means of screening to get low sulfur-content active lime.

本发明提供的回转窑煅烧活性石灰中的硫定向吸附控制方法，具体是：回转窑以煤粉与活性石灰微细粉粒的混合物为燃料，在对块状石灰石煅烧时，利用活性石灰微细颗粒所具有的硫吸附与脱硫能力对烟气中的硫进行吸附，同时通过筛分将吸附了硫的窑灰与煅烧过的活性石灰分离，而得到低硫含量的活性石灰。

Under this condition, the preventive measure was increasing the porosity of coal mass and deceasing the circulating channels of gas and air.

提出了增加卸载区的范围，促使煤体裂纹稳定扩展，降低单位煤体储能从而控制冲击矿压发生的原理。

Yet coal consumption will triple over the next 25 years, making China the world's leading greenhouse gas producer and all but dooming global efforts to reduce carbon dioxide emissions by the 60 to 80 percent recommended by U.N.

未来25年内，中国的煤炭消耗量将增至三倍，成为世界上最主要的温室气体排放国家。

Parameters effect, including grubbing speed, examine result, gas effusing, stress distributing, coal cliff displacement etc, have been measured in the experimentation.

通过对掘进进尺、效检结果、瓦斯涌出量、应力分布和煤壁位移等观察分析，结果表明：水力挤出具有效检超标率低、消突效果好、明显提高掘进速度、安全可靠等特点。

According to the actual parameters of coal mining face, the models of jet blower and air compressor are made out. Then locate the jet blower on mining face and air screen is produced by the jet blower to prevent the gob areas gas effusing to the top even angle.

然后在工作面具体安放射流风机，通过射流风机产生空气幕进行均压、阻断采空区瓦斯向上隅角涌出。

Under the condition of mining pressure the flow pressure of gas in fissured coal fluctuates at the beginning of seepage, and the amplitude depends on the differential pressure between the two ends of flow field.

在采动压力条件下，瓦斯在裂隙煤体中的流动压力具有波动性，波动幅度的大小与流场两端的压力差有关。

The simulation result demonstrate that the mining differential pressure has a great impact on the flow velocity the porosity pressure and the pressure gradient of gas in fissured coal.

模拟结果表明，采动压力差对瓦斯流动速度、孔隙瓦斯压力及瓦斯压力梯度都有很大的影响。

With a low electricity price at off-peak time,the funning cost drops by 60%-80%,which is much lower than that of boilers running on coal,oil,gas or other ordinary electricones.

由于享受低谷电价，其运行费用可降低70-80%，大大低于燃煤、燃油、燃气及普通电锅炉。本产品使用范围广，安装简便，占用空间小，维护费用低，可完全替代其它类型锅炉产品。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。