开采

This paper has discussed three main modes of coal mine construction and development, This paper also points out that the development core is an independent innovation and energy economization.

结合矿井开采发展的历程及我国矿井建设和发菜的三大模式。通过机器技术经济效益评价指标的分析，提出了煤炭工业发展的核心是自主创新和节能。

Moreover,some reasonable advices on eco-environment protection measures are put forward in order to build a ecotype uranium mine.

对铀矿开采的生态环境影响进行恰当地评价，对于有效保护矿区的生态环境具有重要意义。

The results show that coal mining spoils contributed heavy metal pollution of the coal mining soil and heavy metals accumulation is caused by coal mining spoils piled up, catamorphism and eluvium.

由此可见，矿业开采活动对当地土壤重金属含量有一定的贡献，但不同的重金属元素在矿区土壤中的积累表现出差异性。

First, we emend and perfect as soon as possible to mend actual resource tax measure gist and collection means, and we hasten s

首先，尽快修订、完善我国的《资源税暂行条例》，改进现行的资源税计量依据、征收办法，促进我国矿产资源开采的有效节约。

First, we emend and perfect as soon as possible to mend actual resource tax measure gist and collection means, and we hasten saving mineral resource explotation.

首先，尽快修订、完善我国的《资源税暂行条例》，改进现行的资源税计量依据、征收办法，促进我国矿产资源开采的有效节约。

First, we emend and perfect as soon as possible to mend actual resource tax measure gist and collection means, and we hasten sxdying mineral resource explotation.

首先，尽快修订、完善我国的《资源税暂行条例》，改进现行的资源税计量依据、征收办法，促进我国矿产资源开采的有效节约。

The Study on lifting technology of viscosity reducer by emulsification has a very important significance in viscosity reducer for emulsify for heavy oil.

研究了乳化降粘举升工艺，对稠油的乳化降粘开采具有重要意义。

With the intension on the rectification of environmental pollution and energy waste, reclaiming and making good use of the energy are of top priority and become an inevit-able trend of energy development enduringly in the homeland.

随着国家对能源开采、加工和运输过程中所造成环境污染的重视以及对能源浪费治理整顿力度的加大，合理回收利用该部分能源已是当务之急，也是实现能源可持续发展的一个必然趋势。

The mining of uranium and enriched uranium have been abused, so that rapid deterioration of the Earth's environment.

对铀的开采已及浓缩铀的滥用，让地球的环境迅速恶化。

According to the diffusion theory and the principle of material equilibrium, the dissolution velocity ...

结果表明，在合理的工艺条件下，通过盐岩水溶开采可以获得稳定的腔体形态，以满足地下储气库的要求，从而为盐穴储气库的溶腔设计提供理论依据和决策手段。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐