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     The Study of Soil pressure Theory and The Considerable Problems Existed in its Simplified Calculating Method
     土压力理论的研究和简化计算方法存在的严重问题
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     Regularity of the Settling of Suspended matter and the problems existed in its application
     悬浮物沉降规律及其在应用中存在的问题
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     Several Problems Existed in Double-acting Liquid Ring Chlorine Compressor and Improvement(Ⅰ)
     双作用液环式氯气压缩机存在的几个问题与改进(Ⅰ)
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     The Development Condition Existed Problems And Tricks Of Insecticidal Aerosol In Our Country
     我国气雾杀虫剂的发展现状及存在问题与对策
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     PROBLEMS EXISTED IN EMS'S μ4F SCANNING SOFTWAREAND REMEDIAL MEASURE
     调度自动化系统μ4F扫描软件存在问题及其解决方法
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     Improving Sown Pasture-Sheep Production SystemsⅠMonitoring and Analysing Existed Systems
     人工草地绵羊放牧系统优化生产模式研究Ⅰ原系统的监测及分析
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     Some problems existed in the valence states analysis of gold in natural water and geological samples
     天然水及地质样品中金的价态分析若干问题的探讨
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     Column Response Existed by Random Wind Loading
     随机风载作用下钢制塔式容器的位移响应
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     The Measurement and Assessment of Seismic Safety for Existed Bridges
     现存桥梁的抗震安全性评价
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     A Discussion on the Problems Existed in Implementing Wildlife Trade and Process Permit in Shaanxi Province
     在陕西省实行“野生动物及其产品经营、加工许可证”制度有关问题的探讨
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     "That existed is rational".
     “存在的就是合理的”。
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     The existed problems were discussed.
     讨论其存在的问题 ;
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Optimal error estimates in L∞(J;H1(ω)) are proved, which implies an essential improvement to existed results.
      
Spectra results indicated that there existed interactions between nanocarbon and the polymethyl methacrylate (PMMA) matrix, which was consistent with the decrease in glass transition temperature of the composites with increase of carbon content.
      
X-ray photoelectron spectroscopy results proved that chlorine existed in the TiO2 crystal lattice as anion.
      
And the mutual relationship among mechanism approach, traditional approaches existed in artificial intelligence research, and the cognitive informatics will be discussed.
      
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Formulas are derived for the solution of the transient currents of dissipative low-pass T-type electric wave filters. Oscillograms taken by cathode ray oscillograph for d-c. and a-c. cases are found to agree with results calculated from these formulas. From these calculations, the following conclusions are derived. When terminating resistance is gradually increased from O, the damping constants of the sine terms begin to differ from each other, ranging in decreasing magnitude from term of the lowest frequency...

Formulas are derived for the solution of the transient currents of dissipative low-pass T-type electric wave filters. Oscillograms taken by cathode ray oscillograph for d-c. and a-c. cases are found to agree with results calculated from these formulas. From these calculations, the following conclusions are derived. When terminating resistance is gradually increased from O, the damping constants of the sine terms begin to differ from each other, ranging in decreasing magnitude from term of the lowest frequency to the last term of cut-off frequency. Hence the transient is ultimately of the cut-off frequency. At cut-off frequency, this constant is near to but greater than R/2L. For each increase of section, there is introduced an additional sine term with smaller damping constant. Therefore transients die out faster in filters of smaller number of sections. Since transient amplitudes are of the same order of magnitude before and after cut-off, filtering property only exists in the steady states.

此篇先推求收端加电阻时,低频滤波器瞬流之公式。依此公式算出之图与用阴极光示波器映出之曲线相符合。自推算之结果,可得下列结论: (一)在滤波器收端电阻渐加时,瞬流各项之挫率渐互异,其数量由低频项至隔阻频之项顺序渐减;其最小数仍比收端无电阻时之挫率(R/2L)为大。故瞬流终必变为隔阻频之电流;而较收端无电阻时易于消减。 (二)当滤波器增加一段时,瞬流之项数亦加一。所加项之挫率皆比前有者为小。故少段滤波器之瞬流易于消减。 (三)在隔阻频後瞬流之数量与在其前者相彷恒较隔阻频後之安定数量大数十倍,故滤波之特性仅能见之于安定状态。

Formulas are derived for the solution of the transient currents of resistance-terminated dissipative π-type low-pass, T- and π-type high-pass electric wave filters. Oseillograms taken by cathode ray oscillograph for d-c. and a-c. cases are found to agree with the results calculated from these formulas. From these calculations, the following conclusions are derived: (1) When the terminating resistance is gradually increased from 0, the damping constants of the damped sine terms begin to differ greatly from each...

Formulas are derived for the solution of the transient currents of resistance-terminated dissipative π-type low-pass, T- and π-type high-pass electric wave filters. Oseillograms taken by cathode ray oscillograph for d-c. and a-c. cases are found to agree with the results calculated from these formulas. From these calculations, the following conclusions are derived: (1) When the terminating resistance is gradually increased from 0, the damping constants of the damped sine terms begin to differ greatly from each other, ranging in decreasing magnitudes from the first damped sine term to the last term of cut-off frequency. Hence the transient is ultimately of the cut-off frequency. At the cut-off frequency, this constant is greater than the corresponding constant (R/2L) when the termination is absent. (2) For each increase of one section, there is introduced an additional damped sine term with smaller damping constants. Therefore transients die out faster in filters of small no. of sections. (3) With the same network constants, the damping constants of π-type filters are greater than the corresponding values of T-type filters. As a result, transients die out faster in π-type filters. (4) The amplitudes of the transient terms in the attenuation and transmission ranges are of the same order of magnitude, and the filtering property only exists in the steady states. (5) The cut-off frequency of the π-type filters varies with the no. of sections used. When only two sections of low, or, high-pass filter are used, the variation amounts to nearly 26 per cent from the theoretical value.

此篇先推求收端加电阻时,低频与高频滤波器瞬流之公式依此公式算出之图与用阴极光示波器映出之曲线相符合。自推算之结果,可得下列结论: (一)在滤波器收端电阻渐加时,瞬流各项之挫率渐渐互异其数量,由第一挫波项至最後隔阻频项,顺序渐减;其最小数仍比收端无电阻时之挫率(约等于R/2L)为大。故瞬流终必变为隔阻频之电流,而较收端无电阻时易于消灭。 (二)当滤波器增加一段时,瞬流之项数亦加一,所加项之挫率皆比前有者为小,故少段滤波器之瞬流易于消灭。 (三)在π式滤波器中,其瞬流各项之挫率恒较同一电恒数T式滤波器中之相当项之挫率为大故在π式滤波器中,瞬流消灭较易。 (四)在隔阻频后瞬流之数量与在其前者相彷,恒较隔阻频后之安定数量大数十倍,故滤波器之特性仅能见之于安定状态之下。 (五)π式滤波器之隔阻电频随所用之段数而变化在二段之滤波器中,此变化数为最高,其数与理想之数相差百分之二十六。

Formulas are derived for the solution of the transient currents of resistance-terminated dissipative T-& π-type band-pass electric wave filters of the constant X type. Oscillagrams taken hy cathode ray oscillograph for d-c. & a-c. cases are found to agree with the calculated results. From these calculations, the following conclusions are derived: (1) No matter what the impressed frequencies are, the transient is ultimately of the lower cut-off frequency. (2) The receiving-end indicial admittance consists of...

Formulas are derived for the solution of the transient currents of resistance-terminated dissipative T-& π-type band-pass electric wave filters of the constant X type. Oscillagrams taken hy cathode ray oscillograph for d-c. & a-c. cases are found to agree with the calculated results. From these calculations, the following conclusions are derived: (1) No matter what the impressed frequencies are, the transient is ultimately of the lower cut-off frequency. (2) The receiving-end indicial admittance consists of transient terms symmetrical with respect to the mid-frequency term. (3) The transients die out faster in the filters of smaller number of sections. (4) With the same network constants, the transients die out faster in the t-type filters. (5) Filtering property only exists in the steady state. (6) The band width increases with the number of sections. This increase is greater in π-type filters, but the band width is greater in T-type filters.

此篇先推求收端加电阻时,频带滤波器瞬流之公式依此公式算出之图与用阴极光示波器映出之曲线相符合自推算之秸果可得下列结论: (一)在滤波器收端加电阻时,瞬流终必变为低隔阻频之电流,而较收端无电阻时易于消滅。 (二)收端直瞬流之各项均对称於中频项。 (三)在段数较少之滤波器中瞬流易于消滅。 (四)在π式滤波器中,瞬流消滅较在T式中为易。 (五)滤波器之特性仅能见於安定状态之下。 (六)滤波器之带宽随所用之段数而增加。

 
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