查询词典 the current of time

Position tracker is one of the most critical input devices for human-machine interface utilities in virtual reality and other human-machine interaction systems.It determines the position and orientation of an object of interest (such as the user's head) and passes the information to the host computer in real time,which redraws the virtual world on the basis of the current visual point of the user.

摘 要：位置跟踪器是虚拟现实和其它人机实时交互系统中最重要的输入设备之一，它实时地测量用户身体或其局部的位置和方向并作为用户的输入信息传递给虚拟现实系统的主控计算机，从而根据用户当前的视点信息刷新虚拟场景的显示。

The dissertation recommends some kinds of methods and measures: such as adjusting the network configuration, connecting value and threshold value by the total value of all stylebooks, adding part of the adjusting value of the last time to the current adjusting value, transforming the stylebooks to standard value, optimizing activation function, appending threshold value to the putout of the nerve cell and so on. Simultaneity, the author brings forward a new method to optimize the model of artificial neural network . It is using the automatically adaptive genetic algorithm to make the network configuration, connecting value and threshold value of artificial neural network better. The method can make the model better and improve the simulating effect and forecasting precision.Genetic algorithm is an arithmetic based on evolution and genetics used to search the optimization .

本文针对人工神经网络应用中存在的上述问题，介绍了各种改进方法与措施：如用所有样本的总效果对网络权值矩阵和阈值向量进行调整、调整量中加入动量项、标准化训练样本数据、优化激励函数以及给神经元的输出值添加偏置量等；同时还提出了一种新的优化人工神经网络模型的方法，即采用自适应遗传算法对人工神经网络模型的网络结构和权值阈值进行全局优化搜索，以提高大坝安全监测人工神经网络模型的拟合成果和预测精度。

Steel plate with the current valuation level in 2005 on the Topix index and the lowest point in 2006 when the stock prices of steel at the time of the most depressed valuation levels compared to the valuation of listed companies in the level of iron and steel has been lower than the lowest level in history.

钢与目前的估值水平，2005年在东证指数在2006年最低点时，钢铁板块在最低迷的估值水平时股价相比，上市公司在铁和钢的估值水平已低于历史最低水平。

However, to determine the form of the current round of economic recovery has become a matter to make it difficult, the general view is: V-shaped impossible, L-shaped (Japan Heisei recession-type) does not exclude, zigzag (recovery time, sometimes a recession), U-shaped or bottom of the pot-shaped (long-term low-growth to resume growth) higher probability.

然而，确定了本轮经济复苏的形式已成为一个问题，使困难，一般的看法是：V形不可能，L形不排除，锯齿（恢复时间，有时是经济衰退），U形或锅底形的可能性较高。

Using data of the traffic flows in the current cyc le and the cycle before, the traffic flows in the next cycle may be estimated th rough the linear pre-estimation method and each phase time in next cycle is dete rmined with GA optimizing method.

通过对本周期及前一个周期的车流量进行实时测量，采用线性预估方法，对下一个周期的车流量进行预估，以最大通行能力为路口模型控制性能指标，从而确定下一周期的相位配时方案。

By analyzing and comparing the above test results, the special demands for welding current and time and pressure in the spot welding of zinc-coated steels were put forward.

根据对上述试验结果的分析和比较，提出了锌镀钢板点焊时焊接电流、焊接时间和电极压力等参数的选用原则，并对几种镀锌钢板给出了相应的点焊规范范围。

By analyzing and comparing the above test results, the special demands for welding current and time and pressure in the spot welding of zinc-coated steels were put forward.

而在这些产品的装配和制造中，往往会用到电阻点焊方法，由于镀锌钢板表面锌层的熔点很低、硬度也低，给点焊带来一定的困难［1］。

By analyzing and comparing the above test results, the special demands for welding current and time and pressure in the spot welding of zinc-coated steels were put forward.

为了在需点焊加工的产品上推广使用镀锌钢板，并保证其焊接质量，本文对普通冷轧钢板、电镀锌钢板和两种不同锌层厚度的热镀锌钢板进行了一系列点焊工艺及力学性能试验，并通过对试验结果的数据处理和理论分析，找出了几种材料点焊工艺性能上的差异，得出了一套合适的点焊焊接规范范围。

By analyzing and comparing the above test results, the special demands for welding current and time and pressure in the spot welding of zinc-coated steels were put forward. The relevant spot welding parameters for every kind of zinc-coated steels were proposed.

根据对上述试验结果的分析和比较，提出了锌镀钢板点焊时焊接电流、焊接时间和电极压力等参数的选用原则，并对几种镀锌钢板给出了相应的点焊规范范围。

Experiments show that the current manufacturing techniques are able to control the consistency of short tube orifices and at the same time it also has good adjusting features.

试验表明现有的加工工艺能较好的保证节流短管一致性，同时节流短管也具有较好的流量调节性能。

The medicinal plant resources of Gentianaceae in Sichuan Province.

四川省龙胆科药用植物资源。

"Some fortuneteller," scoffed the man, I'm the father of THREE children.

" "一些算命"，嘲笑他，"我的父亲有三个孩子。