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The overriding aim of nutritional programmes is to transition pigs from relatively high-cost diets eaten in smaller quantities to less expensive diets that weaner pigs consume in greater quantities, without detriment to the health and welfare of the animals.

营养程序的首要目的是在对动物健康和福利没有伤害的前提下,使食量增高后的仔猪从食高成本日粮过度到食低成本日粮。

5It is the first time to brought forward the idea that the relieved methane in protected coal seam and the goaf of the near coal seam is exploited according to drilling assurgent hole from the roof of the entry retaining.

运用煤层气卸压抽原理,成功地在淮南矿区顾桥矿实施了地面钻井和留巷钻孔法抽卸压煤层气的工程实践,初步建立了适合淮南矿区的卸压煤层气抽模式。

At the same time, it first uses hydromechanical coupling theory to analyze the influence of groundwater during disposal, and contributes to promote further study of abandoned stope disposal.

同时,在空场处理研究领域,首次运用渗流应力耦合理论分析了地下渗流对空场处理的影响,为深入开展空场处理研究发挥了重要作用。

In accordance with the case of large mining depth in Xingdong coal mine, study on coal floor strata failure depth test of working face 2121 was carried out by water injection test. According to variation of unit injection quantity and distance between testing boreholes and working face advance, coal floor strata failure depth was determined by continual water injection and intermitted monitoring.

摘要: 针对邢东矿大深的情况,利用现场底板注水试验对2121工作面底板动破坏深度进行了测试研究,依据单位注水量的动态变化以及注水孔与线之间的距离关系,确定了底板破坏深度。

A conclusion is drawn that the air leakage intensity of goaf along the caving uncompacted zones around solid wall boundary is relatively large, namely, the air leakage intensity of two ends of working face is large, and the flow lines can be extended to the deep parts of goaf.

得到空区漏风强度沿固壁边界附近的冒落非压实区相对较大,工作面上下端附近处的漏风强度很大,并直通空区深部。关键词空区,漏风流态,有限元法

At the first, the paper describes the importance and the present status of the application of wasteless mining in our country, and gives a special discussion for its conception ,research approaches, and some apply pathways for wasteless mining, then makes a brief description of decision-making and optimizing theories and methods applied in the paper's design and appraisal for the wasteless mining.

另外,为合理地控制切时废料的混入,在矿方法设计中还引入了衡量准工作的切废石混入率的标准与计算方法。矿工艺过程的优化,主要是要设计选用最合适的矿方案与最合适的矿工艺。这是实现无废开极为重要的一个方面,它直接影响着矿山的开效益与无废开效果。

Black Bear and Wild Pig are the large mammals that fed on reasonable volume of bamboo shoot.

大量食、中等食和少量食竹类的物种分别为1种、5种和33种,所占比例分别为2.6%、12.8%和84.6%。

When they compile SiKuQuanShu, they have collected works in northwest China from following channel: Shanxi and Gansu province gathering,from the Yongle encyclopedia, other provinces' gathering,from the personal book collector and which serves as an official in the personal book collection offers, the government book collection and the general books.

四库馆纂修《四库全书》时,从以下渠道入了西北地区作者的著作:陕甘地区进本,《永乐大典》中辑录出的本子,其他各省进本,私人藏书家及在京供职官员进呈的书籍,内府藏本和通行本。

The results show that the main design parameters of the coal cutter are rational and reach the requirements of the design, and its technical performance occupies the leading place among the same kind of domestic products.

为确定MG300/690W煤机能否取代MG2×300W煤机,进行了有关工业生产试验和整机结构性能分析,结果表明该煤机的主要参数设计合理性达到设计要求,技术性能居于国内同类产品的先进地位。

Meat-obtain ratios are considerable different because of the size difference of 4 kinds of freshwater fish, Grass Crap highest, which was 34.79%, Silver Carp and Bighead 24.6%, Crucian 15.56%.

鲢鱼、鳙鱼、鲫鱼和草鱼四种淡水鱼的鱼体大小不同,肉率存在明显差异,其中草鱼的肉率最高(34.79%),鲢鱼和鳙鱼次之(24.6%),而鲫鱼肉率最低(15.56%)。

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I'm strongly against the death penalty — it's an eye for an eye.

我不赞成死刑——这是以牙还牙的报复行为。

And to get you the support you need, we're enlisting all elements of our national power: our diplomacy and development, our economic might and our moral suasion, so that you and the rest of our military do not bear the burden of our security alone.

并给你们所须的支援,我们正徵召国家所有各种的力量:我们的外交及发展,我们的经济力量与道德劝说,所以你们与其他军人不须要孤独地负起国家安全的责任。

Imagine yourself to be an actor in a play on the stage.

设想你自己是一个演员在舞台上表演。