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Objective To explore the diagnostic value of MSCT angiography on the polyarteritis nodosa. Methods The MSCT data of 16 sases with PAN were retrospectively analysed.

目的 探讨多层螺旋何血管成像诊断腹腔结节性多动脉炎(polyarteritis nodosa, PAN)的应用价值,方法回顾性分析16例PAN的MSCTA表现。

Using three prediction methods—probability integral, DM (1, 1) model and exponential smoothing and field measurements analyze the prediction accuracy and point out the applicable condition of the models.

对地表移动研究的核心内容——预测技术,本文提出应用多层递阶周期项分析方法分析由开采引起的地表移动,认为由开采引起的地表移动是趋势项、周期项及随机项运动的合成。

In order to accurately calculate the mining induced subsidence in thick alluvium areas so as to decrease the mining damage and environment disruption,the calculation of surface subsidence caused by water loss of clay was discussed based on probability integral method and used in a real case.

为了更加精确地计算厚冲积层矿区的煤矿开采沉陷问题,减小采动损害与环境破坏,基于煤矿开采沉陷计算的概率积分法,探讨了由于黏土体失水引起的地表沉陷计算问题,推导了黏土体失水引起的地表下沉计算公式,并应用于煤矿实际地表沉陷,加以分析论证。

In order to accurately calculate the mining induced subsidence in thick alluvium areas so as to decrease the mining damage and environment disruption, the calculation of surface subsidence caused by water loss of clay was discussed based on probability integral method and used in a real case.

摘要为了更加精确地计算厚冲积层矿区的煤矿开采沉陷问题,减小采动损害与环境破坏,基于煤矿开采沉陷计算的概率积分法,探讨了由于黏土体失水引起的地表沉陷计算问题,推导了黏土体失水引起的地表下沉计算公式,并应用于煤矿实际地表沉陷,加以分析论证。

Using shape function andclassical interior ballistics theory, the influence relation of the PSS model parameter affectto splitting opportunity, increasing burning surface and interior ballistics characteristicswas researched.The splitting opportunity of PSS appears ahead the academic intending, thereason is that the thickness of outside burning layer is asymmetry, the thinner area splitsearlier, and the thicker area splits later, consequently, the PSS put up progressivity burningeffect. From the practical look, the burning progressivity effect is more profitable than thatincreasing burning surface suddenly.

采用形状函数和经典内弹道理论,研究了PSS发射药的药型参数对分裂时机、燃烧增面性和内弹道性能的影响关系,PSS发射药的分裂时机比理论预计值提前出现,原因是外侧面的燃烧层厚度不均匀,薄的地方先分裂,厚的地方晚分裂,从而表现出了渐增性的燃烧效果,从应用的角度出发,渐增性燃烧的效果比突增的效果要好。

The distributed optimized algorithm of task allocation and the proportional control were applied to the tri-level supply chain system, and proposed the control strategy of material flow.

6针对三层结构的供应链系统,应用MAS中的子任务分配优化算法以及反馈控制中的比例控制方法,对该系统的物流过程给出控制策略。

According to gold deposit minerogenetic process,there are many kinds of altered mineral associated silicolites,pyrites and multiple metal sulfides.

根据金矿床成矿过程中有各类蚀变体—硅化体、黄铁矿化和多金属硫化物伴生,针对测区存在覆盖层厚和高压线密集的客观环境,勘查金矿时选择CSAMT和TDIP单极-偶极测深进行构造及硫化物空间位置的圈定,在勘探区应用地球物理方法取得了较好地质效果。

Dynamic programming algorithm was introduced to solve the problem. Based on discussion of calculation complexity and effectiveness, the exact DP Algorithm was successfully used in operative schedule of the collecting bucket in multi-car-single-layer mode, which has few service nodes. For problems with large number of service nodes, restricted DP algorithm was constructed to avoid rapid expand in calculation and memory demands during programming process. The restricted DP algorithm, successfully used in single-car-multilayer and compound service modes, gets balance between near optimal programming results and reasonable programming time, so as to meet the real time schedule demands.

文中首先在TSP-STW问题的动态规划模型基础上,论述了计算机精确动态规划解法的求解策略和方法以及算法的有效性和复杂性,并将其成功应用于服务节点数相对较少的多小车单层配药服务模式中集中料斗的集药动作规划;在进行服务节点数较多的单小车多层服务模式中取药小车的运动规划时,为限制计算量和存储空间需求的迅速膨胀,引入以合理限制动态规划算法在每一阶段保留的最大状态元素数为核心的有限动态规划法,以便在求解结果的优化程度和规划时间上取得均衡,达到实时调度的要求。

Mountain-based occultation observations provide a lot of refractivity data for monitoring lower atmospheric environment. This novel technique has potential applications.

山基GPS掩星观测可为低层大气环境监测提供大量数据,具有潜在的应用前景。

In order to resolve this problem,an effective conversion of fitted-body coordinate has been used in numerical simulations of flow field within a facture of layered medium ,resulting in a successful transformation of 2D flow-field calculation within a fracture from a complex physics domain to a regular calculation domain.

为了有效地攻克这一技术难关,在层状介质缝内流场数值模拟中,采用了有效的贴体坐标变换,成功地将二维缝内流场计算从复杂的物理域转换到规则的计算域,从而为我国全三维水力压裂数值模拟软件的开发和应用提供了良好的理论基础和新的思路。

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推荐网络例句

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力