有效时间

Compared with Smoothed Pseudo Wigner-Ville Distribution,this algorithm can reduce the cost of computation,save operation time under the situation that keep approximate performance and is suitable for real-time analyzing.

与平滑伪维格纳分布相比，在保持相似性能的情况下，该算法运算量比较小，可以有效地节约运算时间，适合于快速跳频信号的实时分析。

In the production of wood composites, the pressing process is the most important for both productivity and board quality. Steam-injection vacuum pressing provides the means to control the pressing environment of wood composites over an extended range.

在木质复合板生产中，热压是决定产品质量和产量的最重要的因素，缩短热压周期，可以明显提高经济效益，喷蒸热压技术不仅可以有效地缩短木质复合板的热压时间，提高生产效率，而且可以改善产品的某些物理、力学性能，所以有望成为木质复合板热压的一个重要发展方向。

To effectively detect the ship hydrodynamic pressure signal from wind wave background, according to the characteristic difference between the ship hydrodynamic pressure signal and the wave noise, a target detection method is used on the AR model and the artificial neural network.

为了有效地从风浪背景中检测舰船水压场信号，根据舰船水压场信号和波浪噪声信号的差异，以时间序列的AR模型理论为依据，采用基于AR模型和神经网络的舰船水压信号检测方法。

Though the wilting coefficient of soil tend to increase as water-retaining agents increased,the amplitude was low, so the soil available water capacity augmented obviously.

施用保水剂后，土壤可在较长时间内保持较高的水分含量；且随保水剂用量增加，土壤容重下降，总孔隙度和毛管孔隙度则呈上升趋势；土壤凋萎系数虽有增大趋势，但增幅很小，土壤有效水容量明显增大。

The Skopos of film subtitle translation is to provide, within the constraints of time and space, a well-translated subtitle which can contribute to a good understanding of what is happening on the screen.

字幕翻译的主要目的是在时间和空间的制约下，向处在特定文化背景中的观众最有效的传达相关信息，使其能够更好的理解和欣赏电影作品。

The adding of anatase nano-crystalline TiO_2 to the deposition solution accelerates the depositing of TiO_2 articles from the deposition solution on the silica glass fiber. A well-combined and durable TiO_2 thin film on silica glass fibers surface obtained by controlling the deposition temperature, deposition time, deposition cycles, concentration of the deposition solution, relative concentration of the deposition materials, pH value of the deposition solution. The effect of the deposition conditions, the drying conditions and the annealing treatment conditions on the surface morphology, section morphology, growth patterns, thickness of the deposited TiO_2 thin films were investigated. Growth rate and particle size of the thin films were controlled by the deposition conditions.

实验结果表明加入微量的锐钛矿型纳米TiO_2诱导晶可以使沉积液中析出的TiO_2粒子更大程度的以锐钛矿型纳米TiO_2粒子的形式析出；通过对沉积温度、沉积液中组分浓度及相对浓度、沉积溶液的pH值的调节与控制，从而控制沉积溶液中化学反应平衡的移动，研究了以上条件对沉积速率、沉积溶液中[Ti6]2–与—OH、[Ti6]2–之间的脱水聚合反应速率的影响，总结出了获得均匀致密质量较好的TiO_2薄膜的一系列实验参数，并对薄膜的生长模式进行了系统的分析研究；通过对沉积时间及沉积次数的分析，可以有效的控制TiO_2薄膜的厚度及质量；通过对薄膜的干燥条件及热处理条件的控制，可以使利用液相沉积法获得的TiO_2薄膜进一步晶化；并分析了对薄膜引起缺陷的主要原因。

The transient charging behavior under dynamic positive bias stress could be observed and analyzed by varying the duty cycles of stress pulse waveform at a specific frequency, and a universal charge trapping model has been proved in terms of the effective stress time.

此外，我们可以藉由改变在特定频率下之应力脉冲波形的责任周期大小，来观察及分析动态正偏压应力测试下的瞬间充电行为，并证实一以有效应力时间为参数的通用电荷捕捉模型。

Chapter seven emphasis on the deployment of the Internet-based Trip Guidance System and study the key problem of which faces. Discusses the feasibility of Internet used on TGS and the question of how to enhance the service ability of the system.

第七章重点提出了实现基于Internet的出行导航系统以及所面临的几个关键问题，讨论了Internet用于TGS的可行性，并探讨了如何有效的采用相应会显著减少系统的调用和显示时间，提高系统的服务能力的问题。

This paper proposes a new multimedia transmission mechanism over wireless Internet. Based on the differences in bit error rate and transmission trip time between the wired and the wireless, error control and fading control in wireless Internet are improved....

提出了一种面向无线互联网的多媒体数据传输有效机制，根据有线和无线传输数据所存在的不同位误码率和传输时间响应等特点，改善了有线与无线相结合网络中多媒体传输的差错控制和衰减控制，实验结果证明了本机制的有效性。

Its nominal thrust time is eight minutes for each mission, and efficient use of the propellants is a prime consideration.

其名义推力的时间是八分钟，为每个特派团，并有效地利用该推进剂是一个首要的考虑因素。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。