查询词典 grades

Based on the analysis of the affected extent of the neutral-point potential by every space vector on all kinds of voltage and current conditions the concept named neutral point control grade was proposed for the first time in this paper. The calculation formulas of NPCG were presented as well. Based on NPCG, a novel modulation scheme called optimized 3D space vector modulation (O3DSVM) scheme was proposed in a-b-0 coordinates based on the translation principle of axes, by which the space vectors with higher NPCG values are selected to synthesize the object vector to suppress the unbalance of the neutral-point potential.

该文通过对各种电流电压状态下每个三维空间矢量对直流中点电位的影响进行分析，提出了"中点控制度"(neutral-point control grades，NPCG)的概念，并给出了NPCG的计算公式；基于NPCG，在a-b-0坐标系下提出一种基于坐标平移原理的新型"三维矢量优化选择调制策略"(optimized 3D space vector modulation，O3DSVM)，该调制策略能优化选择NPCG值较高的矢量以合成目标矢量，从而达到最大程度控制直流中点电位偏移的目的。

Problems of the shortest-path algorithm in a transportation network are studied and a transportation simulation model is put forward in which the road grades, the traffic condition and the rules of swerving are abstracted.

1引言自主车辆路径导航系统是智能交通系统的重要研究课题，它要求能够按照存储在其内部的数字地图的拓扑信息，实时的规划出一条全局最优路径用于车辆导航。

Results Mitral valve and tricuspid valve prolapse were classed three grades.

结果 二、三尖瓣脱垂分为三级。

They couldn't understand why my grades kept going down and why I was a troublemaker.

他们不明白，为什么我的成绩不断下降，为什么我总是捣乱。

Tumor grades were 2 (4 cases) and 3 (8 cases).

这12例肿瘤的级别，4例为2级，8例为3级。

In the Turks and Caicos Islands,where there are less than 20,000 people,the number of students in some schools is so low that students of several different grades are taught in the same classroom.

在人口不超过2万的特克斯和凯科斯群岛上，一些学校里的学生人数非常少，几个年级的学生在同一个教室里上课。

In the Turks and Caicos Islands, where there are less than 20,000 people, the number of students in some schools is so low that students of several different grades are taught in the same class.

在特克司和凯科斯群岛，人口不足两万，有些学校学生数量很少，以至于几个不同年级的学生在同一间教室里上课。

In the Turks and Caicos Islands,where there are less than 20 000 people,the number of students in some schools is so low that students of several different grades are taught in the same classroom.

在特克斯和凯科斯群岛，人口不足两万，有些学校里学生数量很少，以至于几个不同年级的学生在同一间教室里上课。

To meet the needs for development of the ultra-light automotive a lot of advanced high strength steel grades including DP,TRIP,CP,TWIP and etc.have ...

简要介绍了这些钢铁材料，分析了它们的成分、组织结构、性能特点和生产工艺等。

In order to enable students to meet the learning demand of a scientific method, the design of classroom teaching must be characterized by typicalness, appropriate repetition , changeability and grades.

为了使学生达到某种科学方法的学习要求，课堂教学设计就要力求具有典型性，具有适当的反复、式和梯度。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。