查询词典 gas coal

Shuangbai County teak coal mine rock Adit sub-head coal and gas outburst accident occurred.

双柏县麻栗树煤矿岩子头矿井平洞发生煤与瓦斯突出事故。

There are strict regulations in top-coal caving mining with hazard of coal and gas outburst.

煤与瓦斯突出危险煤层的放顶煤开采有严格的法规限制，限制主要是从安全上考虑的。

Coal gas is produced by the gasification of coal .

煤气是由煤的气化作用得到的。

Research on coal bedding structure is the theory foundation and precondition of coal seam gas exploitation.

煤体层理结构的研究是煤层气开发开采的理论基础和前提条件。

Research on coal bedding structure is the the ory foundation and precondition of coal seam gas exploitation.

煤体层理结构的研究是煤层气开发开采的理论基础和前提条件。

Essential way of solving the gas drainage problem of low permeability coal seam is to increase coal seam permeability.

解决低透气性煤层瓦斯抽放问题的根本途径是增加煤层的透气性。

In production and transportation process of coal gas, the coal tar has comparatively severe harmness.

煤焦油在煤气的生产、运输等过程中存在较大危害。

Ammonia, coal tar and coke are all by-products obtained in the manufacture of coal gas.

氨气、煤焦油、焦煤都是煤气生产过程中的副产品。

In view of a little very fine dust containing in natural gas and coal gas, it is necessary to provide a set of high-effective dust-removal unit for the pressure-regulating equipment of gas transmission and distribution back system.

天然气及煤气输送配后系统调压设备对天然气及煤气洁净度要求比较严格，针对天然气及煤气中所含有少量极细微的粉尘，输送配后系统调压设备需要配备高效除尘设备。

In order to clear off the upper-corner's gas accumulation in coalface effectively, a new method of the rotary radial-jet dispersing the upper-corner's gas accumulation was put forward, This method can make the gas concentration in upper-corner drop below 1% that is limited by Safety Regulations in Coal Mine within 20 minutes.

为了有效地治理工作面上隅角积聚的瓦斯，提出旋转迳向射流驱散工作面上隅角积聚瓦斯的新方法，可使上隅角积聚区瓦斯浓度在20min内下降到《煤矿安全规程》规定的1%以下。

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。