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approach that
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     It is shown that sliding condition only guarantee the slow varying state of real sliding mode approach that of ideal sliding mode but not guarantee the fast varying state of real sliding mode approach that of ideal sliding mode. The method applied for studying normal nonlinear system can not be used directely to singular nonlinear system.
     从所得结论可知 ,滑动条件仅能保证实际滑动模的慢变状态趋近于理想滑动模的慢变状态 ,而不能保证实际滑动模的快变状态趋近于理想滑动模的快变状态 ,研究正常非线性系统的方法已不能简单地被利用到广义非线性系统 .
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  “approach that”译为未确定词的双语例句
     the abducent angle of translamintar approach that the L 3、4 is 13°±3°,the L 4、5 was 17°±3 5°,L 5S 1 was 28 8°±6 3°.
     工作通道外展角 ,L3、4为 13°± 3°,L4、5为17°± 3 5°,L5S1为 2 8 8°± 6 3°。
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     This paper proposes an improved approach that suits for the MPEG-4 standard and bases on the FGS, named IFGS(improved fine granular scalability).
     本文在FGS的基础上提出了一个改进的基于MPEG-4的可扩缩编解码方法:IFGS(Improved Fine Granular scalability)
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     Hardware/software co-design is a fruitful approach that combines the hardware and software perspectives from the earliest stages of the design process and exploits the synergism of hardware and software through their concurrent design to meet system-level objectives [DM91][GDM97].
     软(件)硬件协同设计(Hardware/Software Co-design)是一种在设计的最初阶段就将软件与硬件两方面结合起来权衡功能的分配,在软件与硬件的并行设计过程中实现软硬件的交互,以满足系统的功能与性能要求的设计方法[GDM97][DM91]。
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     Beyond the gauge pressure of 7 kgf/cm~2 and at the temperature above 80℃ the valueof the coefficient of absorption rate of CO_2 into the DEA promoted hot potashsolutions will approach that of CO_2 into the hot potash solutions.
     结果表明,吸收速率系数随压力的提高而下降,压力达7kgf/cm~2(表压)以上时,DEA催化热碱溶液的吸收速率系数与纯热碱溶液的吸收速率系数相近。
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     The level of SP-A in group recovery elevated to approach that in group control(P>0.05).
     肺出血恢复期,SP-A水平明显恢复,接近对照组(P>0.05)。
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     Approach to Chemistry
     浅谈化学入门教学
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     And Research approach.
     阐述论文理论运用与实践案例相结合的研究途径。
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     Grammaticalization Approach to [it that] Construction
     英语[it that]结构式的语法化研究
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  approach that
Assuming that an object of control is subject to the influence of an external bounded unknown disturbance, an approach that guarantees a solution to the problem of command signal output follow-up with the given accuracy is presented.
      
The relative sensitivity coefficients of the elements were calculated taking into account the absolute electronegativities of atoms in accordance with the new approach that was developed previously for single-element solutions.
      
We suggest an approach that allows one to effectively construct two-zone solutions, including real, of some nonlinear equations without applying the technique of algebraic curves.
      
A novel effective approach that combined a traditional cultivation technique with FISH-mediated monitoring of the target organism during the isolation procedure has been developed for the isolation of planctomycetes.
      
The lyophilic nature of the Cd-Ga electrode, relative to methanol and propylene carbonate, is shown to approach that of the In-Ga electrode.
      
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In at least one case where3 the potential folw in the neighborhood of the outherdoge of the boundary-layer varies rapidly,the boundary-layer theory has not been well undorstood,The interest in this problem led the author to the study of the laminar flow of a viscous incomperssible fluid over a curved surface whose curvature,as has been found previously,displays rathor large effects on the natrre of boundary-layer flow.The specific point to be investigated here is th question as to how to join the bundary-layer...

In at least one case where3 the potential folw in the neighborhood of the outherdoge of the boundary-layer varies rapidly,the boundary-layer theory has not been well undorstood,The interest in this problem led the author to the study of the laminar flow of a viscous incomperssible fluid over a curved surface whose curvature,as has been found previously,displays rathor large effects on the natrre of boundary-layer flow.The specific point to be investigated here is th question as to how to join the bundary-layer with the potential flow.On the basis of the fact that the viscous that,in the neighborhood of the outer edge of boundary-layer,the velocity in the main stream dirction u should asymptotcally approach that in the main stream.

利用一种严格的边界層外缘条件重新计算了不可压縮非粘性流体繞二維曲面的运动,求出曲度对表面剪力与速度剖面的影响。墨菲曾首次研究此題,其结果与本文的結果比較,在質与量上均有出入,因此說明如何准确連結边界層与势流对此类問題的重要性。 結果还表明凸面曲度使表面剪应力較平面的剪应力小,也使边界層內的速度比平面的小。反之,凹面曲度使表面剪应力較平面的大,也使边界層的速度比平面的大。又曲度对表面剪应力的影响小,对速度剖面影响大。

An experimental verification of the theoretical peak current equation forreversible electrode reactions of the Randles-Sevcik oscillopolarography, i_p=Kn~(3/2)D~(1/2)m~(2/3)θ~(2/3)α~(1/2)cμΑ, is carried out with both single- and multisweep methods. Themultisweep method is essentially that of Delahay, while a simplified circuit isdevised for the single-sweep procedure. The constant K in the above equation has been worked out by Randlesand Sevcikc, but their values differ by some twenty-one percent. Experimentalresults...

An experimental verification of the theoretical peak current equation forreversible electrode reactions of the Randles-Sevcik oscillopolarography, i_p=Kn~(3/2)D~(1/2)m~(2/3)θ~(2/3)α~(1/2)cμΑ, is carried out with both single- and multisweep methods. Themultisweep method is essentially that of Delahay, while a simplified circuit isdevised for the single-sweep procedure. The constant K in the above equation has been worked out by Randlesand Sevcikc, but their values differ by some twenty-one percent. Experimentalresults as to which K value is correct have been contradictory. The authorspoint out that Sevcik's value of K is too low, due to the error in choosing too largea unit in his numerical integration. By taking smaller units and reperformingthe integration, the K value increases and approaches that of Randles. Thus thecorrectness of Randles' K value is ascertained and this value is used in calculatingthe theoretical slope. Their single-sweep results, with concentrations from 2×10~(-4) to 1×10~(-3) m/l andα~(1/2) from 1 to 4 volts/sec, agreement between experimental and theoretical slopesis obtained in the case of Tl~+ in m NaCl. In the case of Cd~(++) in m NaCl, experi-mental results deviate from the theoretical value, and the deviation increases withincreasing c and α~(1/2). Contrary to an unproven idea of Delahay, i_p obtained bymultisweep method is higher than that by the single-sweep procedure. However,in calculation of the theoretical values, a value of 15.0×16~(-6) obtained by polarLographic method is used for D of Tl~(+) in m NaCl. The use of the value of Dat infinite dilution is thought to be unjustified. If a D value of 15.0×10~(-6) is used,Delahay's results of Tl~+ in KNO_3 would be higher than the theoretical equationinstead of agreeing with it. This fact seems to support the findings of this paper. Various methods of correcting for capacity currents are compared and discus-sed. The authors point out that at α~(1/2) less than 2 volts/sec, the method of drawingan hbrizontal line introduces no appreciable error while at, high α, various methodsyield different results. This fact lowers the accurraey of data obtained at high α. The iR drop in the electrolytic cell and on the series resistance causes themeasured α to be different from the a actually applied on the drop electrode. Anelementary approximate correction of this effect is mentioned. Results after thiscorrection show that the deviation of Cd~(++) from theoretical at high c and α maybe due partly to this effect.

(1)以单波法及多波法验证Randles-Sevcik示波极谱理论公式之i_p~c及i_p~α~(1/2)关系,多波法用Delahay线路,单波法则用简化线路。单波法之结果,对亚铊离子在m氯化钠中,在2×10~(-4)~1×10~(-5)m浓度,α~(1/2)为1及4伏特/秒,实测结果和理论符合。镉离子在m氯化钠中,实测结果与理论有偏差,偏差随浓度及α~(1/2)加大而加大。多波法之i_p实测值高于单波法。 (2)在计算理论曲线时,作者肯定Sevcik之系数过低而采用Randles数值。亚铊离子于m氯化钠中之扩散系数D,采用极谱法测得之数值15.0×10~(-6)而不用无限稀时之D值(20.0×10~(-6))。 (3)在α~(1/2)低于2伏特/秒时,可用画水平线法扣除电容电流。在高α时各种扣除电容电流方法所得结果不同,影响结果之可靠性。 (4)电解池线路上之iR降使加在滴汞电极上之α改变。这种改变使实测i_p值偏低。作者曾作初步近似修正,结果说明α及浓度大时,镉离子实测数据对理论的偏差的一部分可能是由于iR降的作用。

Prompted by the need for analysing amino acids in very small samples of nervous tissue in physiological work, an ultramicro method of electrophoresis on cellophane paper instead of filter paper has been developed. The method described permits the determination of γ-amino butyric, glutamic and aspartic acids in quantities of the order of millimicrograms. Its sensitivity is thus about 200 times that of the ordinary paper electrophoresis or chromatography. Its accuracy as judged by self-consistency in repeated...

Prompted by the need for analysing amino acids in very small samples of nervous tissue in physiological work, an ultramicro method of electrophoresis on cellophane paper instead of filter paper has been developed. The method described permits the determination of γ-amino butyric, glutamic and aspartic acids in quantities of the order of millimicrograms. Its sensitivity is thus about 200 times that of the ordinary paper electrophoresis or chromatography. Its accuracy as judged by self-consistency in repeated trials or by recovery tests of known amounts of amino acids, approaches that of the usual method. It is also capable of separating β-alanine, cysteic acid, cysteine and basic amino acids in alkaline solutions.

(一)为了滿足生理学研究中微量生物材料的分析,我們創立了一个用玻璃紙做材料的超微量电泳方法。能測量毫微克范围內的γ-氨基丁酸、谷氨酸和門冬氨酸。 (二)本方法的灵敏度为5×10~(-9)克,誤差范围±7%,与一般纸层析相較,精确度相差不多,而灵敏度提高了两个数量級。 (三)除上述氨基酸外,玻璃紙电泳还能分开β-丙氨酸,磺酸丙氫酸,半胱氫酸和碱性氨基酸等;用本法我們測定了一些生物样品中的游离氨基酸合量,符合用纸层析所得的結果。

 
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