Destructive techniques are techniques in which the sample is decomposed by a reagent and then the concentration of the element in the aqueous extract determined by a physical technique.
破坏性技术是将样本溶解于溶剂，然后通过物理方法分析元素浓度的技术。
If the structural element of the stent is symmetrical, the uniform stress appears by force, furthermore, the stress concentration is avoided effectively, and the maximum stress decreases obviously.
支架单元结构的均匀，可使得支架受力时应力分布均匀，且有效避免应力集中现象，其应力最大值明显减小；
Since blocked diaphragms have a greater concentration of fasteners around the perimeter of each sheathing element, blocked diaphragms provide greater shear capacities than unblocked diaphragms.
由于封闭的横隔在每个覆板构件周围有更大的紧固力，其比非封闭的横隔提供更大的抗剪切能力。
The leave was the same change trend as the shoots, but N was higher than Ca in order of element concentration.
叶片中的矿质元素含量变化与新梢变化相同，但含量顺序上氮高于钙。
Results have shown that the lixivium concentration affected by leaching times, pH, leaching temperatures, and grain diameter values of the media and most parts of the hazardous element are stable.
结果表明，有害元素大部分以稳定态存在，浸出液浓度受浸泡时间、酸碱度、浸泡液温度、粒径的影响。
The achievement of Laser micro-probe spectrochemical analysis of doped element concentration in laser crystals is reviewed and several essential problems in its field are described.
本文概括介绍了激光微区光谱定量分析激光晶体中掺杂元素浓度的研究成果，着重讨论了定量分析中的几个主要问题。
The re impurities in 4n lutecium oxide are determined by ICP-AES in this paper. The effects of matrix concentration acidity on tested element are analysed.
采用ICP - AES法测定4N氧化镥中稀土杂质，考察了基体浓度、酸度对被测元素的影响。
Non horizontal Multi Layer Finite Element Model is applied in this paper to simulate the flow and the concentration of Wanzhou Reach in The Three Gorges Reservoir(TGR).
本文采用斜分层有限元模型模拟了三峡水库蓄水前后万州江段的流速场和浓度场。
High calculation accuracy can be obtained in calculating the concentration factor of the stress around infinite elastic medium cavities by using boundary element method.
使用边界单元法计算无限大弹性介质中孔洞周边应力集中系数，可获得较高的计算精度。
The metal element concentration in TSP of Chongqing urban district atmosphere was higher than that of Beijing, Shanghai and other cities, the causes of the results were also discussed.
重庆城区大气TSP中金属元素浓度高于北京、上海等城市，并探讨了产生的原因。
When a fluid in the sensing circuit has concentration changes after flowing through the gatherer, the color of the electrochromic element correspondingly changes.
当流经该收集器内、该感测电路中的流体的浓度变化时，则该电致变色元件的颜色随之变化。
The interference due to variably concentration of sodium, and using of internal standard element yttrium compensate for it were investigated.
试验研究了不同浓度钠基体对分析谱线产生的干扰和用钇作为内标元素来补偿钠基体的干扰。
The stress distribution and the stress concentration factor in the welding region of tubular TT-joints subjected to axial loads are analyzed using finite element method in this study.
本文首先通过有限元分析得到了轴力作用下的TT管节点在焊接区的应力分布以及应力集中系数。
The first order and the second order of fully discrete discontinuous finite element schemes are proposed for the concentration equation.
对浓度方程在时间上进行了一阶和二阶离散，采用间断有限元格式；
And the order of element concentration was first n, next K, then Ca, P, Mg, Fe, Mn, Zn and Cu in order.
在元素含量的顺序上是氮最高，钾次之，随后依次为钙、磷、镁、铁、锰、锌、铜。
Conclusion the toxicity of lead on neuron development might related to the change of trace element concentration, reduction of antioxidation ability and increasing apoptosis in brain.
结论铅的发育神经毒性与中枢神经系统铜等微量元素的改变、抗氧化能力下降及由此所致的细胞凋亡数量增加有关。
The spatial distribution of element concentration values is expressed in the form of map.
元素浓度值的空间分布应以图的形式表示。
The interference effects of matrix element Fe and high concentration elements Nd, Dy, Co, B on impurity elements were studied.
研究了基体元素铁、主量元素钕、镝、钴、硼对杂质元素的光谱干扰情况；
In this model the effect of meteorological element, output and concentration of air pollutant were considered, so it's physical foundation may be more believable than pure statistics model.
在模型中既考虑了气象条件的作用，又考虑了污染排放量和起报日的污染浓度，与以往的空气污染预报统计模型相比，所依据的物理基础更可信一些。
The effects of the solvent, monomer concentration, temperature and rare earth element on the polymerization and the molecular weight of polymer were investigated.
研究了聚合溶剂，单体浓度，反应温度以及配合物中稀土离子性质对催化活性和所得聚苯乙烯分子量的影响。
Thus the sample could be analyzed in which the difference of every element"s concentration is very large with high efficiency and precision."
从而实现对各元素浓度差别较大的样品进行高效率的精确测量。
The pressure is approximated by a finite element method, and the concentration is approximated by the combination of a Galerkin finite element method and characteristics-finite element method.
压力方程由标准有限元方法逼近，浓度方程则用特征有限元方法逼近。
Soft X-ray zone plate is an important element which has the function of concentration, dispersion and imaging in soft X-ray optics.
软x射线波带片是软x射线光学中聚焦、色散和成像的重要元件。
This paper researches the effects of undercut defect on stress concentration in welding joint of pressure pipe by means of the finite element method software ANSYS.
从数值模拟入手，采用大型有限元软件A NSYS研究了不同尺寸、不同位置的咬边缺陷对压力管道焊接接头应力集中系数的影响。
The variety feature of geochemical element concentration in region could reflect the regional geological processes that control the orientation of geological body and mineral deposits.
研究地球化学元素在空间上的含量变化特征可反映区域控岩、控矿因素的区域分布规律。
In yet another embodiment, a storage element can be added to the system, thereby allowing the device to store a set of concentration values.
在又一实施例中，能够把存储元件加到该系统，由此允许该器件存储一组浓度值。
Unsteady flow and concentration fields in the liquid phase of a gas-liquid contacting system were simulated to show the natural convection by utilizing the finite-element CFD method.
并通过吸收传质流体CFD模型，应用有限元方法对气液吸收过程中出现的自然对流发生过程进行了数值计算，得到了液相自然对流发生时的非稳态流场分布和浓度分布信息。
Unsteady flow and concentration fields in the liquid phase of a gas-liquid contacting system were simulated to show the natural convection by utilizing the finite-element CFD method.
并通过吸收传质流体CFD模型，应用有限元方法对气液吸收过程中出现的自然对流发生过程进行了数值计算，得到了液相自然对流发生时的非稳态流场分布和浓度分布信息。
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