查询词典 prime component

The analysis results for community species component and plant diversity showed that exclusion did change the species component and increase plant diversity remarkably, while the indicateor life-form structure, palatability analysis indicated that community for old exclusion is becoming perennity and unpalatability, whereas community for comparative exclusion is under stable non-equilibrium condition, in the view of vegetation coverage, mean height, biomass, palatability of plant composition, community for old exclusion has lower than new, comparative exclusion which proves partly that long-term exclusion can not increase grazing values for semi-arid rangeland.

对3种封育措施群落组成和生物多样性的分析结果表明，封育改变了群落的组成成分并增加了生物多样性，同时对群落植物的生活型、饲用价值分析计算结果则显示，老封育的群落植物逐渐向多年生发展，放牧价值开始降低，而对照区则明显处于一种非平衡的稳定状态。从3种措施植被的盖度、高度、生物量和饲用价值来看，老封育区均低于新封育区和对照区，表明长期封育不利于促进并提高草场的放牧利用价值。

A vector with x component a, y component b.

具有x分量为a、y分量为b的矢量。

The paper based on component technology and COM, study and design the vector graph component, realize the function of vector graph, such as the input and output of map, the display of map, mutual plot with mouse, etc.

本文以组件技术和组件对象模型(COM，Component Object Model)为基础，研究和设计GIS矢量图形组件，实现GIS系统的矢量图形功能，如地图的输入输出、地图的显示、鼠标交互绘图等。

Unsupervised algorithms such as principal component analysis 、 vector quantization、 independent component analysis and factor analysis can be understood as factorizing a data matrix subject to different constraints.

典型的非监督学习算法，如主分量分析、矢量量化、独立分量分析、因子分析等，均可以理解为对原始数据矩阵在一定条件限制下进行分解。

By specifying the appropriate integer (0 for the x component; 1 for y; and 2 for z) as an argument, you can obtain the desired vector component.

通过使用恰当的整数作为参数来获得想要的矢量分量。

The transformation of the instantaneous value symmetry component applied,the positive sequence space vector of fault component of the voltage and current can be derived.

应用瞬时值对称分量变换，可提取电压、电流故障分量的正序空间向量。

Some key technologies on the system have been introduced: the vector calculation module as a signal processing module used to adjust the phase of the feedback signals, the feedback kicker cavity and the notch filter used to filter the DC component and revolution frequencies component in a signal and save the feedback power.

其中重点介绍了在该系统研制过程中所涉及的部分关键技术：矢量运算模块的开发使得反馈系统的调试简易方便；Notch滤波器用于滤除反馈信号中的直流分量以及回旋频率分量，节省反馈功率；激励条带的研制。

How is the horziontal component of velocity for a projectile affected by the vertical component?

水平组成部分是如何的速度为一个弹丸受到垂直分量？

During the storms, to the magnetic field vertical component of magnetic declination and there has been a marked ups and downs, but most features of the horizontal component of H.

在磁暴期间，地磁场的磁偏角和垂直分量都有明显起伏，但最具特征的是水平分量H。

In electromagnetic detecting application horizontal component Hx and vertical component Hz may be observed separately.

实践证明，在一般条件下，是可以取得实际效果的，但在定位和定深精确度方面，还有待进一步提高。

Aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales.

生活于水中或湿地的蕨类；从新生代生存至今；有时归于石松目之中。

The engine was uprated from a 90hp Franklin to a 125hp Lycoming.

改良过的引擎是从90hp到125hp莱康明富兰克林。