Tariff reductions allow comparative advantage greater play . they will help eliminate trade distortions and facilitate more efficient allocation of resources among the trading partners , thus further promoting economic growth globally 削减关税令相对优势在全球贸易中能发挥更大作用，有助消除干扰贸易的因素，有利贸易伴间更有效的资源分配，进一步推动全球经济增长。
Abstract : it is reported that in the presence of an appropriate amount of triethanol amine ( tea ) and dodecyltrimethyl - ammonium chloride ( dtac ) , the sensitivity for the faas determination of molybdenum and the ability to eliminate interference are remarkably enhanced 文摘:介绍了在火焰原子吸收光谱法中三乙醇胺及氯化十二烷基三甲基铵对钼的增感作用及消除干扰的能力。
It is reported in this paper that by using the absorption spectrum of the interfering component as the denominator factor , the first derivative ratio spectra of the component mixture can be obtained , and the inter ference of one of the components can thus be eliminated 利用混合物的波谱除以干扰组分的波谱得比值波谱，对波长求导得比值导数波谱，由此可消除干扰组分的吸光度叠加效应。
In the present grounding measurements in substations , the large electric current method is used to raise the ratio of signal to noise , but this method does not obviously decrease the measurement error . the test instruments are unwieldy , and it is easy to threaten personal safety 在现有变电站接地网接地测量中，采用大电流测试法来减小测量误差，其消除干扰的效果并不理想，且此方法测量设备笨重，还可能危及人身安全。
But how to measure grounding resistance of large grounding grid simply and exactly is a difficult problem to electric power staff all the time . this paper has classified measuring methods of grounding resistance at home and abroad , and has analyzed interference factors during measurement , and has summarized principle and characteristic and measuring current and so on of various measuring methods 本文对国内外现有或正在研究的测量方法进行了分类，分析了测量地网接地电阻干扰的主要来源，并首次全面地对各种方法的原理、特点、测试电流、消除干扰能力和测试结果进行了比较分析、总结归纳，方便后来者研究应用。
The precise mathematic model is not brought forward in this thesis . because of disturbance uncertainty , a disturbance observer is used to estimate the equivalent disturbance of whole control system , and then the estimation of disturbance is compensated to system to counteract the disturbance of system 由于干扰的不确定性，论文在抗干扰设计时并没有建立干扰的准确数学模型，而是利用干扰观测器来预测整个系统的等效干扰，然后将干扰量重新补偿到系统中去，以达到消除干扰的目的。
With the difference algorithm of image sequence , we can eliminate the background and extrude the moving object in images . with this thought , we do difference on image sequence in two phases , and than analyze images combining with math morphologic means , which can eliminate periodicity motion , segment the moving area of moving object , and finally , we get the tracing and location of moving object 首先，分析序列图像的差图像，可以消除图像中的背景，突出其中的运动目标；以此为基础，本文对现场采集的图像序列分两阶段进行差分，然后分别将结果二值化，结合形态学的方法消除干扰和背景中周期性的运动；最后分割出目标的运动区域，从而获得目标的运动轨迹和位置。
