principal component是什么意思

网络释义

用法例句

Study on Silphium perfoliatium as fish feed ingredient;

串叶松香草作为鱼用饲料成份的研究

In this paper, a method of Microwave -Assisted Extraction (MAE) is used to extract the ingredients of garlic and it has been compared with the traditional method.

本文用微波辅助萃取技术萃取大蒜有效成份，并与传统方法进行了比较。

Plus varieties of Chrysanthemum morifolium were selected, with the characteristics of high-yield, fine quality and fine merchandise property, by analysis on their biological characteristics, pollen morphology, yield factor and effective ingredients.

对药用菊花湖菊、小洋菊、大洋菊、黄菊4个品种的生物学特性、花粉形态、产量构成因子、有效成份及商品性状进行分析研究，并选出高产优质和商品性能好的优良品种。

Study on Clustering Algorithm and Backup Mechanism in Wireless Sensor Networks

无线传感器网络分簇算法与簇首备份机制研究

The Research on Clustering Schemes in Mobile Ad Hoc Networks Based on Backup Mechanism;

基于备份的移动自组织网络分簇策略研究

A New Clustering Algorithm with Adaptive Optimal Cluster-Heads

一种新型的自适应最佳簇首分簇算法

Remember, to be able to do a Emergency Recovery you must first backup your computer. Click One Button Backup to backup your computer now.

记住，要进行紧急恢复，必须首先对计算机进行备份。单击“一个按钮备份”以开始备份计算机。

Research on Cluster Heads Distribution Optimization and Reliability in Cluster Algorithm;

分簇算法中簇首分布及可靠性问题研究

To make a backup of(a program or file).

备份为（程序或文件）备份

A Routing Algorithm Based on Low-energy And Double Cluster-head in Wireless Sensor Network

一种基于低能量的双簇首WSN路由算法

Firstly because of equipment failure ? back-up systems and contingency planning in case you lose all your data ?

首先是因为设备故障，你需要一个备份系统和突发事件处理计划，以防丢失全部数据，

Design and Implementation of High-efficient Clustering Routing Protocol Based on Optimal Cluster-Heads and Multi-hop Mechanism

基于最优簇首和多跳机制的高效分簇路由协议的设计与实现

first provisional register

首份临时选民登记册

Make two copies of this poem.

把这首诗复写两份。

You must specify a backup device for Backup or Restore.

必须为“备份”或“恢复”指定备份设备。

Research And Improvement of Cluster Header Selecting Scheme of Leach In Wireless Sensor Networks

WSN中LEACH协议簇首选取策略的研究与改进

Comparison of Cluster-head Selection Algorithms in Wireless Sensor Networks

无线传感器网络簇首生成算法的比较研究

Cluster head cycle-switching schemes for farmland wireless sensor networks

农田无线传感器网络中的簇首轮换机制

An Improved Authentication Cluster Control Model in Ad Hoc Network

引入权重的Ad Hoc网络身份认证簇接入模型

This facilitates continued archives being created on a piece of media without having to space out to the end of the previous backup first.

这让后续的归档更容易创建在介质上，如果没有这样做则必须把前面首次备份的尾部隔开。

In order to decide what kind of an environmental impact statement need be prepared, it is necessary first to describe accurately the "federal action" being taken.

为了确定需要准备一份什么样的环境影响报告书，必须首先准确地描述出所采取的“联邦决定”。