查询词典 grade crossing

The crossing at grade of two streets.

两条街的平面交叉路口。

Aiming at the weakness of traditional evaluation methods, traffic conflict technique and fuzzy synthetic evaluation were introduced into grade crossing safety evaluation.

针对传统的平面交叉口安全评价方法存在的缺陷，将交通冲突技术和模糊综合评价方法引入其中。

It is found that montmorillonite and kaoline show different behaviors of dissolution and precipitation, which greatly alter the potential grade crossing the whole soil areas.

本文采用自制的电动修复装置，研究了模拟土壤组分高岭土和蒙脱石在外加电场条件下发生的变化。

A bus ran into a train at the level ／ grade crossing .

一辆公共汽车在平交点与火车相撞。

For multiphase control grade crossing,in order to reduce the delay of crossing and advance the traffic capability,the utilization ratio of lanes should be improved though setting changing direction lane and implementing the plane composite traffic of crossroad.

对于多相位控制的平面交叉路口，为了降低路口的延误，提高路口的通行能力，可以通过设置变向车道，实施交叉路口的平面复合交通，来提高车道的利用率。

A cellular automaton model is proposed to describe the traffic flow at the grade roundabout crossing with the inner and outer lanes. The effect of the turning probability at the grade roundabout crossing is studied.

从道路结构出发，建立了具有内、外环道的平面环形交叉路口元胞自动机模型，研究了转向概率对平面环行交叉路口交通流的影响。

Article 40 At the crossing point of a railway and a highway, priority shall be given to the installation of a grade separation structure; at a crossing where a grade separation structure is not installed, a level cross

在城市规划区内设置平交道口或者人行过道，由铁路运输企业或者建有专用铁路、铁路专用线的企业或者其他单位和城市规划主管部门共同决定。

Article 40 At the crossing point of a railway and a highway, priority shall be given to the installation of a grade separation structure; at a crossing where a grade separation structure is not installed, a level crossing or a pedestrian cross-walk may be laid in conformity with relevant provisions of the State.

第四十条铁路与道路交叉处，应当优先考虑设置立体交叉；未设立体交叉的，可以根据国家有关规定设置平交道口或者人行过道。

From the years nineties on, STEC strided into the arena of roadway , airfield, super-highway, viaduct, grade crossing , high rise buildings, electo-mechanical installation, resulting in yearly growth of building production, and incessantly growth of enterprisal profit.

公司秉承"以信为本、以特为主、以技夺优、以质取胜"的企业宗旨，始终保持着中国软土隧道事业的领先优势，承建了上海黄浦江底所有的越江隧道，隧道施工技术水平接近和达到国际先进水平。

Firstly,we particularly explained the algorithmic of themusic recognition.Then,we made a study of the music characteristic and the musicrecognition methods.As for the burrs of the music signal,we put forward a curveplastic method to eliminate the burrs.Considering the difficulties of detecting thepoint of the music speech,we made use of the multi-frequency energy curve to detectthe end-point of the music signal with the crossing zeros rate.As for thedisadvantages of the large operation and influence of the formant,we improved theAMDF theory with the linear prediction algorithmic to detect the error.In order toobtain the characteristic parameter of the music signal,wo calculate the MFCCparameter to obtain the template and the pending signal characteristic parameter.Inorder to improve the rate of the recognition,considering the disadvantages of theDTW algorithmic,we find a new method to improved the DTW algorithmic bybroadening the point of the music signal and made simulation experimentation;As forthe disadvantages of the contraposition grade to the pitch,cadent and sing name,wefind a method to dynaic adjust the results of the recognition to improve the accuracyof the grade.

详细阐述了嵌入式音乐识别算法的详细设计与实现，研究了音乐语言的特点和音乐识别的侧重点，并阐述了基于音乐信号特色的语音处理及识别方法；针对音乐信号中的毛刺干扰，提出了曲线整形的思想，消除了音乐信号中的毛刺；针对音乐信号端点检测困难的特点，利用多频段能量曲线分割结合过零率来实现端点准确检测；针对音高提取运算量大且容易受共振峰影响的特点，利用线性预测残差的方法对传统的AMDF算法进行了改进并提取出了音高，在实际实现时，优化了AMDF算法，减少了计算量；为了得到较好的特征参数，通过求取梅尔频标倒谱系数的方法，分别提取了模板信号特征参数和待测信号特征参数；为了提高识别率，针对传统DTW算法的缺陷，采用了放宽端点和声刺激法改进了传统的DTW算法的性能并进行了仿真试验，使音乐识别率得到明显提高；在音高、节奏评分时，针对对位评分的缺点，采取了动态调整的方法提高了评分的准确度。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。