" Metamaterials give us the ultimate handle on manipulating the behavior of light," Di Falco said.

The conical grinding method has four grinding parameters, and for three drill point geometric parameters, the lip clearance angle, chisel edge angle and point angle, the flank configuration is not unique.

麻花钻锥面刃磨方法有4个刃磨参数，当给定外缘转点的结构圆周后角、横刃斜角、锋角这3个结构参数时，后刀面的形状并不唯一。

In this paper, copper diethyldithiocarbamate colour reaction in paraffin phase has been studied.

系统地研究了Cu-铜试剂（DDTC）在石蜡相显色反应。

Kinetics of Electrochemical Process of Pyrite Electrode in Diethyldithiocarbamate Solution

DDTC体系中黄铁矿电极过程动力学的研究

Solid waste Determination of arsenic Silver diethyldithiocarbamate spectrophotometric method

GB/T15555.3-1995固体废物砷的测定二乙基二硫代氨基甲酸银分光光度法

Uncertainty Analysis on Determination of Arsenic in Water by Silver Diethyldithiocarbamate Spectrophotometry

二乙氨基二硫代甲酸银分光光度法测定水中砷含量的不确定度分析

The Study on Raising Chlorine Dioxide Ratio for ChlorineDioxide/ Chlorine Synergic Disinfectant Generator

提高ClO2／Cl2协同消毒剂发生器的ClO2产率的条件研究

This article introduce the property, uses and production process of chlorinedioxide, and it's future development prospect.

详细地介绍了二氧化氯的性质、用途、生产方法及其未来的发展前景。

Effective complex chlorinedioxide generator is a waste water processing equipment which has good disinfection effects and economic benefits.

高效复合二氧化氯发生器是一种消毒效果好又经济实用的污水处理设备。

Property, production and application of stable chlorinedioxide

稳定性二氧化氯的性质、制备及其应用

The other antigens with higher positive rate were sulphuric acid nickel, aromatic mixture, formaldehyde, sodium mercurothiolate and ursol D in turn.

其余阳性率较高的抗原依次是硫酸镍、芳香混合物、甲醛、硫柳汞、对苯二胺、二盐酸乙二按、替可的松新戊酸盐等。

By far the worst of the storm has taken place in and around Texas.

至今为止,最大的暴风雪发生在德克萨斯附近.

Most of Gaudi's works were constructed in and around Barcelona.

高迪的大部分作品都建在巴塞罗那及其周边地区.

Hundreds of factories have been closed in and around Beijing.

北京内外的上百家工厂都已关闭.

Today many businessmen in and around the capital are disgruntled.

现在,许多首都内外的商人们开始不高兴了.

He is a well-known township entrepreneur in and around the town.

他是四乡八村有名的乡镇企业家.

It finds food in and around water.

它在水中和岸边寻找食物.

The mobile phone speaker cover can not only protect the speaker, but also have an influence on the electroacoustic characteristics.

手机扬声器的面盖不仅起保护扬声器的作用，而且会对电声性能产生影响。

The thermal slices transfer heat to the mobile phone outer cover and reduce the heat gathered around the optical engine.

导热片将热量传递至手机外壳，减少了热量在光引擎周围的聚集。

Design of injection mould for mobile phone battery cover

手机后壳的注塑模具设计

Chosen the mobile phone cover, paper introduced the method of the injection mould design.

本文以手机前盖注塑模具设计为例，介绍了常用注塑模具设计方法和流程。