Principal component analysis ( PCA ) is an important method widely used in data compression and feature extraction.

Slang had been a principal component of his rattling.

他唠叨的主要是一些假语村言.

The competition of IT already from emphasize a technology changing direction stage by stage emphasize news.

信息技术的竞争已经从强调技术逐步转向强调信息.

A variety of evidence make clear, to individual collection charge, moving toward reality stage by stage.

种种迹象表明, 向个人收取费用, 正在逐步走向现实.

After joining WTO, chinese economy will blend in global economy stage by stage in the loop.

加入了WTO后, 中国经济将逐步融入全球经济循环之中.

But these big companies get lost small-sized machine and distributed server stage by stage.

但这些大企业缓缓转向小型机和漫衍式办事器.

Product structure is optimized stage by stage, the actors or actress tea production has big breakthrough.

产品结构逐步优化, 名优茶生产有大的突破.

Therefore, image quality and radiation protection is being concentrated stage by stage in the world.

为此, 影像质量与辐射安全防护问题越来越受到人们的普遍关注.

Current, the situation of carriage market already turned to's market stage by stage from seller's market.

当前, 运输市场的形势已从卖方市场逐步转向了买方市场.

At algorithm level, the design methodology of stage-by-stage scale factor is studied.

在算法级, 研究了逐级比例因子设计方法.

You can search stage-by-stage according to the classification of web stations.

你可以按其对网站的分类逐步查找.

Should say lumber market already entered autumn stage by stage now.

应该说现在木材市场已逐步进入成熟期.

Stage-by-stage method plays important function on local damage diagnosis of large-scale structure.

大型工程结构局部发生损伤的情况,分阶段法起到了重要作用.

The result shows that gray cast iron is not more sensitive to the hydrogen-induced crack-tensile steel.

将试验结果与 高强 钢综合比较,得出灰口铸铁对氢致裂纹不甚敏感的结论.

The effects of several inoculants on high-manganese gray cast iron � � s microstructure and properties with 4.

研究了不同的孕育剂对高碳当量高锰灰铸铁组织和性能的影响.

The current studies and some new techniques on gray iron production are simply outlined in.

对灰铸铁的研究现状和生产中的一些新技术做了评述.

The rare earth-magnesium-calcium alloy is a compacted agent more suitable for high gray iron in cupola.

稀土镁钙合金是比较适合于冲天炉高硫铁水使用的蠕化剂.

Gray iron has corrosion resistance that is improved over steel in certain environments.

灰口铁具有抗腐蚀能力,在某些环境下,甚至超过钢.

Abstrace : The influence of titanium on the structure and properties of gray iron was investigated.

研究了钛对灰铸铁组织和性能的影响.

The forming process of castchromized alloy layer on the surface gray iron has been studied.

研究了铸铁表面铸渗铬合金层形成过程.

Abstract: In this paper, an achievement on water-soluble cores of aluminabase suitable for gray-iron casting is reported.

文摘: 本文报导了一种可用于铸铁件生产的刚玉基 水溶性 型芯的研究成果.