查询词典 trace elements

The method also can be combined with J_2 invariant conditions and be described by osculating orbit elements.Finally,the results indicate that the formation drifts are greatly reduced with the optimized initial mean anomaly.And the drift of formations set up in osculating elements is decreased by(81.8681) percent,compared with that in mean elements,which proves the feasibility of this optimization design.

仿真算例表明：优化设计结果可以明显降低大椭圆轨道编队卫星的相对漂移量，与平根数描述的编队初始条件的设计结果相比，相对距离极大值点的漂移量降低约81.8681%，验证了基于主星平近点角初值的大椭圆轨道编队优化设计方法的可行性。

The result of study show:The landscape elements of the landscape system in the eastern section of QiLian mountain that mainly is grassland, and the forest and bush landscape elements large-scale distribution in it;Snow and ice landscape element and water was scattered in the mountain landscape by relatively small area, the water element which runs through the various landscape elements,The results show that, the study area, QiLian Mountain is high heterogeneous region and number of the high heterogeneous is moving.

结果表明：祁连山东段山地景观系统中草地景观要素为基质，水域景观要素为廊道，而森林、灌木以及冰雪景观要素为斑块；山地景观系统呈现出高度景观异质性且在1994年到2008年之间表现出明显的异质性变化。

The volumetric method is also used in the measurement of the base metal and the principal elements in the high Cr cast iron and the electrooptical spectrographic method for determination of multi elements in the high Cr cast iron is established by choice of certain basic elements as the internal standard,by correction of the base spectral line and the interfered spectral line and induced correction and blank correction of the material as well as by drawing up the correction curves.

采用容量法测定高铬铸铁中基体及主要元素的含量，通过选用基体元素作内标，对谱线进行基体和干扰校正以及材质的诱导校正和空白校正，绘制校正曲线，建立了光电光谱法测定高铬铸铁中多种元素的方法。

The invention adopts a semiconductor laser or other pumping lights, such as a LED light, to pump the etalons, optical elements and wave plates made of optical materials which can absorb the pumping light, and regulates the output power of the pumping light to change the temperature of transmittance zones of the etalons, wave plates and optical elements so as to realize the changing of transmission wavelength of the etalons, the quick changing of wave plate phase and the quick changing of optical length of optical elements.

本发明采用半导体激光或其他泵浦光如LED光泵浦由可吸收泵浦光的光学材料制作的标准具、光学元件、波片，由调节泵浦光输出功率改变标准具波片、光学元件透光区域的温度，从而实现标准具透过波长的改变、波片相位快速变化，光学元件光学长度快速变化。

E The fractal and spherical particles exist favorably in the coarse fraction, while in the fine mode (0μm) are floccules formed by flocking fine particles together, containing crustal elements and mainly being silicates and aluminosilicates. f The content of Al, Si, Fe in TSP samples is higher than in PM〓, indicating an enrichment of these elements in coarse mode. g Compared with non-dust particles, the dust particles are more homogeneous in terms of morphology, particle size and composition. h Particles with irregular shape and well-distributed size dominate in dust samples, containing crustal elements such as Mg, Al, Si, Ca, Fe et al.

细粒中除小圆球外，大多为细小颗粒聚结在一起的不规则块状颗粒，主要含地壳元素，可能是硅酸盐和铝硅酸盐。fMg、Al、Si、Fe在PM〓中的含量较相应的TSP中的低，可见这些元素主要存在于较粗颗粒中。g沙尘期气溶胶粒子的形貌较非沙尘期单一、均匀，非沙尘气溶胶粒子的形貌、组分较沙尘期复杂。h沙尘期样品中，粒径均匀、形状不规则的颗粒最多，这些颗粒主要含地壳元素Mg、Al、Si、Ca和Fe等，是典型的由源区传输过来的沙尘粒子，但其高硫含量表明在青岛特殊的地理环境下，在粒子表面发生了硫的均相和非均相反应。

Although clad diamond prevent iron family elements from eroding diamond and improve the strength between matrix and diamond, there still are many problems in applying Fe-base formulae. After the adding amount of reinforced elements is determined, the effect of the basic elements of matrix on its comprehensive performance is studied. The results show that while wc content is 15%. Fe/Ni 1: 1, 663-Cu etc 50%, Sintering temperature 920℃, temperature kept time 1. 5 mintues, matrix comprehensive preformance is best.

尽管金刚石表面镀膜隔绝了铁族元素对金刚石的侵蚀和提高了胎体对金刚石的粘结强度，但以Fe代Co还存在胎体的综合机械性能等问题，本文试着从材料学的强化理论出发确定了微量元素的添加量之后，用正交试验设计方法研究了胎体的基本组元WC、Fe/Ni、663—Cu的加入量及烧结工艺对胎体综合机械性能的影响，得出在WC15%，Fe/Ni1：1，663—Cu等其它为50%，烧结温度920℃，保温时间为1.5分时胎体的综合机械性能最优。

We consider that the better system of measuring for the size of granular mixtures may be the number of elements. So we designed another kind of large system experiment, the experiment of Tokamak plasma system with the characteristic of jillion element. Under the condition of Ohmic heating and Low confinement mode, the interaction among elements will increase with the debasement of plasma confinement, causing SOC.It validates the assumption that SOC mostly depends on the mechanism of interaction among elements in a large system, in other way.

为通过精密可控实验手段探讨大尺度散粒体组元之间相互作用强度对SOC的影响，利用磁约束受控核聚变托卡马克装置实验数据，在欧姆加热或L模放电的条件下，对HL-1M边缘区等离子体粒子输运的统计性质分析发现，反常输运具有SOC的特征。

The application of the gap element method in gap joint mechanisms is proposed. The stiffness matrix of the rotate joint elements and sleeve joint elements with gap elements are formed and the dynamic equation of the structure is given in the paper.

文中还提出了旋转铰和滑移铰两种间隙单元，推导了间隙单元的刚度矩阵，最后给出了含间隙单元的结构动力学方程。

It is a further object of the invention to provide a method of assembly of a foldable plastic slider comprising a body having a depending separator finger and a pair of foldable wings, with a profiled plastic reclosable fastener particularly suited for thermoplastic bags for opening and closing the fastener comprising the steps of positioning a plastic bag having a plastic reclosable fastener along the top edges of the front and back faces of the bag to receive the foldable plastic slider in straddling relation, the fastener comprising a first interlocking element having a female fastener profile attached to one of the faces of the bag and a second interlocking element having a male fastener profile attached to the other face of the bag, inserting the plastic separator finger between the first and second interlocking elements, and forming the slider in straddling relation around the male and female fastener profiles at the top edges of the bag by folding the pair of wings downwardly toward the plastic separator finger and against the opposite sides of the body, and securing the pair of wings to the opposite sides of the body in fixed relation with the separator finger to form a pair of side walls for the slider whereby movement of the slider in one direction opens the fastener elements and movement in the opposite direction recloses the fastener elements.

资讯科技是提供一个组成一个有一只靠区分者手指和一双可折叠的翅膀身体的可折叠的塑料滑动器的一个集会的方法发明的一个较进一步的物体，由于一特别地描绘塑料的 reclosable 牢系工具轮廓为打开而且关闭组成放置一个沿着袋子的前面和后面脸的最高边缘有一个塑料的 reclosable 牢系工具在跨立关系方面接受可折叠的塑料滑动器的塑料袋子的步骤牢系工具为热后可塑性的袋子适合，组成一种第一的联锁元素的牢系工具对袋子的脸之一和一种第二种联锁的元素附上女性的牢系工具描绘附上男性的牢系工具描绘到另一个袋子面对，插入塑料的区分者手指在第一和秒联锁的元素之间，而且形成滑动器在向塑料的区分者手指向下地在折叠双翅膀旁边的袋子最高边缘在男性的和女性的牢系工具的周围跨立关系描绘方面和反对身体的相反边，而且固定到与区分者手指的固定关系的身体相反边的双翅膀为一个方向的滑动器的运动打开相反的方向牢系工具元素和运动的滑动器形成一双旁的墙壁再关牢系工具元素。

The finite element model of the hybrid spatial structure system is built by the beam elements,truss elements and cable elements,its dynamics characteristics and the influence of some parameters are analyzed thoroughly here by the block Lanczos method,and then the computed re...

选用梁元、杆元和索元的混合有限元模型，采用分块Lanczos法，对凯威特型索承网壳结构的自振特性及其影响因素进行了系统分析研究，并与单层网壳结构进行比较，得出了可用于工程实践的结论，对其抗震、抗风性能分析研究以及工程应用有参考价值。

Chinese traditional virtue is humility and wariness,the compliment and praise to the others should be declination

中国人的传统美德是谦虚谨慎，对别人的恭维和夸奖应是推辞。如

We bought this house on the never-never.

我们以分期付款的方式买下这座房子。