查询词典 non-metallic element

In orde to obtain system optimization in high efficiency production and operation safety, the microcosmic problem of goaf treatment was brought into the creative design of mining method and the synergism of two problems was studied. Firstly, in view of the occurrence characteristics and mining conditions of catacalstic ore section of orebody No. 105 in Gaofeng mine in Guangxi province, considering the adaptability to different scale goafs in the ore section, based on mining environment reconstructing idea and continuous mining mode, a new mining method (mining environment reconstructing non-pillar sublevel-strip continuous mining method) was put forward. Then, some repr, esentative goafs were selected and their stabilities were calculated by discrete element method on the basis of differences of goaf scale, surrounding conditions and situ stress field. At last, the mining layout was adjusted on the basis of goafs stability analysis and the goafs were adjusted as a part of cutting engineering, blasting space or stope, so as to determine all kinds of goafs treatment schemes.

摘 要：为在生产高效和作业安全上取得系统整体最优，将碎裂矿段的空区处理微观问题纳入采矿方法创新设计宏观问题中，开展2种问题的协同研究：首先，针对广西高峰矿105号矿体碎裂矿段的赋存特点和开采技术条件，考虑对各种规模空区适应性，基于采矿环境再造和连续采矿理论，提出采矿环境再造无底柱分段分条连续采矿法；然后，根据采空区规模、围岩状况和原岩应力场等条件的差异，在所有采空区中选择具有代表性的空区，运用离散元程序对其稳定性进行计算分析；最后，在稳定性分析的基础上，灵活调整开采布局，将采空区调整为部分切割工程、自由爆破空间或采场，从而确定出各种规模空区的处理方案。

Considering the prerequisite of joint non-linearity and glue-line elasto-plasticity,the stress distributions in the glue-line of asymmetrical joint for continuous or gap jointing were analyzed by finite element method and glue-line structure optimization was made.

在考虑接头非线性和胶层弹塑性的前提下，利用有限元方法分析了连续胶层不对称接头和间隙连接不对称接头中胶层内的应力分布情况，并在此基础上对胶层结构进行优化。

Meanwhile,the limiters for various types of non-orthogonal elements are proposed,and an implicit scheme for DG finite element method is developed also.

鉴于有限元方法内存需求大和计算效率低的不足，在分析有限元和有限体积方法的各自优缺点的基础上，综合二者的优势，提出了有限元/有限体积区域混合计算方法。

The three-dimensional explicit dynamic analysis of mild steel orthogonal cutting process is done using the non-linear finite element code LS-DYNA.

利用非线性有限元程序LS-DYNA，对低碳钢直角自由切削过程进行三维显式动力分析。

In the experiment of this study, the failure structures of pipeline of exhaust system, rib material of water tank, slip-oil steady pin bolt and slip-oil separated valve made by copper alloy under water were cut individual with suit size for specimen. The X-ray, PT non-fracture detection, observation of metal micro-structure, hardness test, element spectrometer, SEM and EDS were used to investigate the mechanism of corrosion and failure.

实验首先将长期使用於水下环境之排烟系统管路、水柜肋材、滑油泵稳梢螺栓及船舶舱间柴油系统用隔舱阀之破损构件，分别裁取适当尺度之试件，藉由X-ray、PT非破坏检验、金相显微组织观察、硬度实验、腐蚀生成物机制研究、分光分析仪成分分析及利用SEM进行破断面形貌观察与EDS元素成分分析等实验。

Main production: Screen Machine: diamond net machine, non-woven network of machines, Crimped Wire Mesh Machine, Barbed Wire machine, blade gill nets machine, window Gauze element machine, welded wire mesh machine, steel plate net machine, keel equipment, Clean ball machine, wire drawing machine; Screen: stainless steel net, rhombus net, welded wire mesh, fencing wire mesh, hexagonal wire mesh, steel nets, widely used in petroleum, chemical, building, civil, food and other aquaculture industries.

主要生产：丝网机械：菱形网机、无梭织网机、轧花网机、刺绳机、刀片刺网机、窗纱网机、电焊网机、钢板网机、龙骨设备、清洁球机、拉丝机；丝网：不锈钢网、菱形网、电焊网、护栏网、六角网、钢板网等，广泛用于石油、化工、建筑、民用、食品养殖等各种行业。

In regard to non wear resistance of the white iron shot in the practical application process,alloy iron shot have been produced by means of adding alloying element and proper heat treatment.

针对白口铁丸在实际应用过程中不耐磨易破碎的现象，在白口铸铁中通过添加合金元素及适当热处理等手段生产合金铁丸。

In order to raise drilling speed of the non saline dome wells in Kenkiyak Oilfield, the relationship between rake angles of the cutter, profile of the bit, which have effect on cutting depth and impact-resistant of PDC bit cutters, and cutting efficiency is studied respectively using finite element analysis according to rock properties of the research area. The structure of the PDC bit is then optimized by using the research result.

为提高肯吉亚克油田非盐丘井钻井速度，根据地层岩石力学参数评价结果，利用有限元方法对影响PDC钻头攻击性和抗冲击性的齿前角、冠部形状等结构参数与破岩效果之间的关系进行了研究，并对PDC钻头的结构进行了优化设计。

Stress distribution at cross section of transverse uniformly distributed load and non-uniformly distributed load applied to concrete cylinder by finite element method is analyzed.

采用有限元的方法计算分析了混凝土圆柱体在受横向均匀线荷载和非均匀线荷载时其横截面上的应力状况。

In practical application item, UIC515 Code is firstly applied for analyzing the complete welded frame by finite element method to get the area with bigger nominal stress and lower fatigue behavior, and then study the hot spot stress fatigue strength evaluation approach of the typical fillet ring joint at the connection of tubular transom and side frame, the plate to plate end weld between side frame web plate and anti-yaw damper hold and the non-close ring end weld at the connection of braking unit hold and tubular transom.

在热点应力疲劳评估时，首先对焊接构架中的环向角焊缝、板间端焊缝以及非闭合环向端焊缝进行简化，得出了相应的几何应力集中系数和热点应力疲劳极限，为热点应力疲劳评估提供了依据。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。