查询词典 tracks

According to the characteristics presented by armed helicopters during cruising or searching for ground targets, this paper has established the mean-square deviation stationary random model of helicopter tracks. It is an important method to decorrelate the measure noise by estimating the parameters of the color noise online. Kalman filtering and forecasting have been made with helicopter tracks. The simulated study has been carried out on helicopter tracks under the condition of color noise. It is very difficult to get an accurate and reliable prediction when the data is very limited. The paper make use of the theory of grey system to resolve the problem of prediction of helicopter tracks, establishing the GM model of grey systems and the cumulative residual error model of n degree, then correcting the GM forecast model. In the period of sampling, GM model and residual error model have been established on line to improve prediction precision.

结合武装直升机在巡航或搜索地面目标的特点，给出直升机航迹模型为协方差平稳随机模型，在线估计有色噪声参数，对测量噪声去相关，对直升机航迹进行卡尔曼滤波与预估，最后对有色噪声条件下的航迹进行了仿真研究；在数据非常有限的情况下，准确地预测又很困难，本文提出了用灰色系统理论解决直升机航迹预测问题，建立了灰色系统GM预测模型和n次累加残差模型并对GM预测模型进行修正，在每个采样期间内，实时在线建立GM预测模型和残差模型以提高预测精度。

Efficiency: Balance oil, shrink pores, relieve scars caused by acne, repair reddish tracks, protect skin from keratinization, fade tracks after remove acne, prevent acne tracks, and make skin smooth, tender and white.

功效：平衡皮肤油脂，收敛毛孔。改善面部暗疮、粉刺、青春痘留下的疤痕、红印有很好的修复作用，防止肌肤角质化，淡化面泡复原后的印痕，杜绝暗疮印的出现，令肌肤平滑嫩白。

There we saw the wolf tracks still clearly imprinted in the blowing sand, but when the tracks reached the other side of the hogan they turned into moccasin tracks.

我们看到有狼的轨迹仍清晰地印在风沙、但是当到达彼岸铁轨的过冷又变成Moccasin轨迹。

Within a click the AlphaWipe Tracks Cleaner securely erases your internet tracks, application tracks, computer activities and programs history information stored in many files and unevident places on your computer.

在一个点击alphawipe轨道清洁安全的清除您的Internet轨道，轨道上的应用，计算机的活动和节目的历史资料储存在许多文件和unevident地方，在您的计算机上。

This method selects two parameters, energy and variance, as the characteristic parameter of trolley track, and successfully in extracts the feature frequency belt of trolley track vibration. Furthermore, this technology is applied to practical engineering programs and has good veracity and reliability.2. According to the research of this thesis on the trolley tracks\' present data, the status classification of trolley track with normal distribution is presented. This method divides trolley tracks\' situations into five parts and perfects the classifying method of trolley tracks\' mechanical situation.

具体工作如下；1、将小波包分析方法运用到岸桥小车轨道振动信号的分析中，选取能(来源：A65BC0f论c0文网www.abclunwen.com)量与方差作为轨道的振动特征参数，有效提取出铰点部位与非铰点部位的振动特征频段。2、将正态分布原理引入到岸桥小车轨道铰点机械性能状态的划分之中，并用最大熵概率分布加以验证，准确地反映了实际情况，并定义了正态分布诊断准则的状态分级评价的原则和临界点，方便和简化了状态判断的决策过程。

The boxcars can be rearranged at a shunting yard that has an input track, an output track, and K holding tracks between the input tracks and output tracks.

该车厢可以重新排列在一个调车场具有一个输入采样，输出跟踪，和K之间举行的输入和输出轨轨道轨道。

His plan calls for a boat that runs upon a pair of endless tracks, after the fashion of a land tractor, the tracks consisting of moving belts carrying a series of paddles.

他的计划呼吁建立一个船民运行后，一对无休止的轨道后，时装的土地拖拉机，铁轨构成的移动带进行了一系列的

Modern tracks are made with a rubberized surface, while, older tracks may be of dirt or cinders.

现代跑道表面都是由橡胶做成的，然而一些老式的跑道还可能是由土和煤渣做成的。

Tracksites occur exclusively throughout several stratigraphic levels of a thick, mixed-affinity, lagoonal-terrestrial sequence known as the Upper Red Formation in north central Iran and within a continental series deposited in the southern Caspian area in north of the country. The tracks from the Upper Red Formation are mainly artiodactylan type, attributed to several gazelle sized species due to their small size, and other tracks attributed to small, medium and large sized mustelid and felid carnivores.

足迹化石在伊朗中北部分布在一套被称为上红组的厚层、混杂的泻湖－陆相地层序列的数个层位中；在伊朗北部的里海地区南部，则位于一套陆相沉积序列中：产自上红组的足迹以偶蹄动物类型为主，由于个体很小，可归入几种像羚羊一样大小的种；其他足迹则分别归人小型、中型和大型的触科和猫科食肉动物。

Nine to thirteen tracks (1 mm apart between tracks) were explored for each muscle. For each track, every 1 mm was an investigating site. To elicit LTRs, the needle was rapidly inserted perpendicularly into the muscle.

再以终板区为基准，每一公厘为一轨，轨上每隔一公厘便以针头快速垂直刺入肌肉，以观察是否有局部抽搐反应。

Foods high in this vitamin include oily fish such as salmon, tuna and, and fish liver oils.

维生素D含量高的食物包括诸如大麻哈鱼、金枪鱼和鲭鱼之类的油鱼以及鱼肝油。

We need you to cosign our public letter demanding that press intimidation cease immediately, and that all charges be dropped.

我们需要您cosign我们的公共信，要求记者立即停止恐吓，并要求所有收费下降。