煤田

It is difficulty to acquit the seismic data in the coal seismic exploration because of the limitations of the complicated surface.

近年来，随着煤炭工业的发展，国家对煤田的勘探开发力度加大，要求了解更精细的地质构造、特别是小断层的发育情况。

Porosity logging methods examining gas reservoirs of sandstone and argillaceous sandstone through acoustic wave and density are effectively used in coal beds.

煤田中在煤层附近有煤层气砂岩储层、泥质砂岩储层的存在，声波、密度两种孔隙度测井是进行孔隙度探测的有效方法。

In coalfield exploration in Runan County of Henan Province,thickness of tertiary and quaternary formation is up to 700 m,water sensitive clay,sandy clay,sandy argillite,aleurolite and gravel strata are often encountered.These easily cause hole diameter's shortage or enlargement,wall of hole collapsing and breaking.

在河南省驻马店汝南县林楼一正阳县张楼一带的煤田勘探中，第三、第四系地层厚达700m，经常遇到水敏性粘土、砂质粘土、砂质泥岩、粉砂岩和卵砾石等地层，易造成缩径、超径、坍塌和掉块等孔内复杂情况。

It's the biggest coalmine in east, central and south China with the title of" Coal bunker of central China" since long before.

已探明各类矿藏57种，其中原煤储量103亿吨，是华东和中南地区最大的煤田，素有"中原煤仓"之称；盐储量2300亿吨，居河南省第一位，是我国第二大井盐产地；铁矿石储量6.6亿吨，占河南省储量的76.3%是全国十大铁矿之一。

Donets Basin is one of the former Soviet Union's largest coal field.

顿巴斯是原苏联最大的煤田之一。

It is difficult to acquire the 3-D seismic exploration data in coal field in the mountainous area due to complex topography and surface geology.

在复杂的山区煤田三维地震勘探中，受地形和地表、地质条件的限制，使野外地震数据采集技术成为关健。

The paper presents the analysis of PDC bit structure commonly applied in colliery and coal field exploration and a brief introduction on processing technology and attentions which should be paid in application.

主要对煤矿和煤田勘探中常用的金刚石复合片钻头的结构进行了分析，并简要介绍了复合片钻头的加工工艺和使用中应注意的问题。

Because of the special geographic position and suitable climatic conditions, making the coalfields in Northwest China become the world\'s most serious coalfield disasters affected by spontaneous combustion.

由于我国西北地区煤田特殊的地理位置以及适宜的气候条件，使中国成为世界上煤田自燃灾害最为严重的国家。

With the introduction of clean development mechanism to the coalfield fire extinguishing, some problems such as insufficient money and key equipments depending on import can be solved effectively, and the step of coalfield fire extinguishing will be accelerated in our country in the future.

通过引入清洁发展机制，能有效解决目前煤田灭火工作中存在的资金不足、关键设备不能自给等问题，从而加快中国煤田灭火步伐。

The area is noted for a number of large coal-fields between which Paleozoic limestone, pre-Cambrian sandstone and slate, in the general sense of the words cover large tracts of China.

这一区域因为蕴藏许多大煤田而闻名，这些煤田位于石灰岩与前寒武纪砂岩和板岩的夹层间，几乎覆盖了大片中国。

The reasons of iron ions content overproof in grade Ⅱ desalting water system,such as variation water quality,contamination of regenerant , operation adjustment of pretreatment system and switching operation of bed were discussed.

对二级脱盐水系统中铁离子含量超标的原因，如来水水质发生波动、再生剂受到污染、预处理系统操作调整、床体运行切换等进行了论述。

You were hired to drum up new business, so go and do it.

公司雇你招徕新业务，你就做你的事好了。