Oil shale (or kukersite) and limestone deposits, along with forests which cover 47% of the land, play key economic roles in this generally resource-poor country.
沿着林区，覆盖整个陆地面积47%的油页岩(位于kukersite)和石灰岩矿藏在这个资源匮乏的国家的经济中扮演了重要的角色。
Roughly five and a half million foreign workers play an important role in the Saudi economy, for example, in the oil and service sectors.
大约由550万名外籍工作者在沙特经济中起了重要的作用，例如，在石油和服务部门中。
ScienceDaily (June 18, 2010) -the Gulf of Mexico: what role will the Mississippi River play in oil washing ashore and into delta wetlands?
科学日报(2010年6月17日)- - -墨西哥湾：密西西比河将在石油污染沿海以及三角洲湿地地区起到怎么的作用呢？
Other possible reasons include problems with the oil pump, rod and main bearing clearances, camshaft end play, or CAM bearings and lifters.
其他可能的原因包括油泵问题，杆和柱轴承之间的空隙，凸轮轴停止工作或者凸轮的方位和升降等。
As they put more money in the smaller, pure-play companies that focused on one industry vertical, Big Oil began to trade at a discount.
随着投资者将资金注入小型、单一业务公司（专注于单一行业），大型石油公司的股票交易就开始折价。
Oil does not last indefinitely, and because it can become rancid it is best to play it safe.
油脂并不是可以无限期地使用，因为油脂会酸败，最好安全地使用。
National oil companies have got most of the toys, and they won't let the Western majors play.
国有的石油公司霸占了玩具的大部分，根本就不让西方的巨头染指。
The potential for less leverage — or borrowed money — at play in the oil-futures market has already helped spark a sharp fall in oil prices, which have lost about 20% of their value this month.
石油期货市场杠杆操作减少的前景已经拖累油价大幅下跌，本月油价已累计下跌约20%。
It is necessary to establish the relative oil software industry to bring the production force of science and technology into full play and compete with major foreign oil firms.
要发挥科技是第一生产力的作用，建立能够与国外大石油公司相抗衡的竞争地位，必须建立相应的石油软件产业。
With summer's heat and humidity at bay, and with a prolonged drop in oil prices meaning less work and more play for some Houstonians, now is the time to go.
鉴于夏日中的河湾炎热又潮湿，油价长期下跌也让部分休斯顿人工作减少而娱乐增多，现在正是去那里度假的好时机。
Barkindo added that Venezuela, and its new Oil minister Nelson Martinez, would play a central role in a new OPEC, non - OPEC ministerial committee charted with monitoring production.
巴尔金多补充说，新石油部长纳尔逊·马丁内斯将带领委内瑞拉在全新的欧佩克、非欧佩克部长委员会的监测生产方面发挥核心作用。
Petroleum equipments play an important role in the production of oil field, the management and operation of these equipments have direct impacts on the oil output and the enterprise's profit.
石油设备是油田生产作业的重要组成部分，这些设备的管理与运行直接关系到石油产量和企业的经济效益。
Speculators do play an important role in setting the price of oil and other raw materials.
投机商在石油和其他原料的定价上的确起着很重要的作用。
Bearing off the inside of oil pan installed by the centrifugal effect is likely to enter the oil off the internal bearings, seals play a role.
轴承内侧装设的甩油盘就是借离心作用将可能进入轴承内部的油甩掉，起到密封的作用。
Started and style in the arts and give full play the strengths of watercolor, but also rich in charm and modern art oil painting.
在艺术开工和风格上充分发挥水彩画的长处，又富于油画的艺术韵味和现代感。
Out in the shaft loaded oil ring groove or by centrifugal force along the axis of the oil drain off the surface, the oil flows back to the assembly after the pool, and thus play a role in sealing.
在轴上开出沟槽或装上油环，借离心力将沿轴表面外流的油甩掉，集结后流回油池，因而起到密封的作用。
Hemp and coconut oil products deliver the nourishing "good fats," which can play a vital role in our health.
大ma和椰子油产品提供滋补的“好脂肪”，它可以在我们的健康发挥了至关重要的作用。
Despite apocalyptic warnings about climate change, water scarcity, pollution, and peak oil, there isn't exactly a stampede to the travel industry's door demanding it play its part.
虽然气候发生变化、水资源短缺、环境受污染，石油达到峰值，但是这些末世警告却完全没有引发人群蜂拥而上，要求旅游业履行职责。
The State Strategic oil Reserve Base will play a significant role in safeguarding the oil supply and energy and economic security of the country.
国家石油战略储备基地将对保障石油安全供给，维护国家能源安全和经济安全发挥重要作用。
Therefore high precision and automatic measurement of the oil liquid level play a great role in oil industry.
因此，实现油罐液位的高精度自动化计量具有十分重要的意义。
A combined extruding die of new structure was designed to bring 3150kn oil press into its full play under the condition of limited shut height.
在设备闭合高度有限的情况下，设计了1副结构新颖的组合式挤压模具，使3150kN油压机设备能力得到了有效的发挥。
The evaluation and prediction of the reservoir production capacity play an important role in the exploration and development of an oil field.
油气储层产能评价与预测对于油气田的勘探与开发有着重要的意义。
Because of the oil field nature condition and the requirement of the production management, vehicles play an important role in the oil field production.
由于油田所处的自然条件和油田生产的需要，生产车辆在油田生产中起着十分重要的作用。
The qualitative and quantitative analysis play an important role in separation, refining and further processing of wash oil.
定性和定量分析在洗油的分离精制和深加工过程中起着重要的作用。
The transient pressure and the property of oil products play a important part in the gasification and gas absorption process of pipelines at the negative pressure.
油品的气化吸收过程与瞬变时的压力变化和油品的性质有很大的关系。
The transient pressure and the property of oil products play a important part in the gasification and gas absorption process of pipelines at the negative pressure.
油品的气化吸收过程与瞬变时的压力变化和油品的性质有很大的关系。
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