certification requirements是什么意思

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用法例句

Pb, Cr, Cd, As and Hg were chosen as representatives for different kinds of heavy metals and the main purpose was to find the proper reactive conditions for simultaneously stabilizing all of them with emphasis on Cr stabilization.

厌氧阶段的设置、CO2的辅助处理、提高绿矾的用量都有助于Cr的稳定化;同时使用CO2辅助处理也有助于As的稳定化,但CO2只适用于强碱性、高酸中和能力的灰渣。

Influence of chromium additions on the crystalline size and magnetic properties of nanocom-posite Nd2Fe14B/.

5,1,2)的纳米晶复合永磁合金,研究了Cr的添加对合金晶粒尺寸及磁性能的影响,结果表明适量Cr的添加能有效抑制磁性相晶粒长大,提高了合金的矫顽力。

This paper presents a new viewpoint that there exists the desalinization of chromium within the Myanmar jadeite jade,which plays an important role in genesis and evolution of green colour of the jadeite jade.

认为缅甸翡翠在形成的过程中存在“Cr的淡化”现象,探讨了该现象在翡翠绿色形成和演化过程中的表现形式及意义。

Influences of content of chromium on the synthesis of mesoporous Cr-Smectite;

Cr含量对合成含Cr中孔Smectite催化材料的影响

The content of chromium and nickel in iron ore is mensurated contemporary by ICP-AES;

ICP-AES同时测定矿石中Cr、Ni含量

Chromium Concentration by 5 Species of Economic Marine Animals Sampled from Different Regions of Yantai Sea;

不同海产动物和烟台海域不同海区的紫贻贝（Mytilus　edulis）对重金属（Cr）富集的研究

Separation and Determination of Cr(Ⅲ)and Cr(Ⅵ);

Cr（Ⅲ）和Cr（Ⅵ）的分离与检测

Analysis of Elements and Determination of Cr(Ⅲ) and Cr(Ⅵ) in Chinese Ink;

中国墨汁元素分析及Cr（Ⅲ）和Cr（Ⅵ）测定

Fabrication and characterization of 30.4 nm Cr/Al/Cr self-supporting filters

30.4nm Cr/Al/Cr自支撑滤光片的研制

Snoek Relaxational Peak in a Fe-Cr-Al Alloy;

Fe-Cr-Al合金中的Snoek弛豫

Cr-α-Al_2O_3 Composite Electrodeposition Technology

Cr-α-Al_2O_3复合电沉积工艺

Simultaneous Determination of Cr (Ⅲ) and Cr (Ⅵ) by Spectrophotometry;

分光光度法同时测定水样中Cr（Ⅲ）和Cr（Ⅵ）的含量

Combustion Synthesis and Properties of Al(Cr)_2O_3-Cr(Mo) Cermets;

Al（Cr）_2O_3-Cr（Mo）金属陶瓷的燃烧合成与性能

Effect of Cr on Microstructure and Hardness of AlCrxCuFeNi High-entropy Alloy System

Cr对Al-Cr-Cu-Fe-Ni高熵合金组织与硬度的影响

Isolation and characterization of bacteria with chromium(Ⅵ) removal capacity from chromium-contaminated tannery sludge

Cr(Ⅵ)抗性菌株的筛选及其Cr(Ⅵ)去除特性研究

Toxic Effects of Cr~(3+),Cr~(6+) on the Physiological and Biochemical Characteristics of Tea Plant

Cr~(3+)和Cr~(6+)胁迫对茶树生理生化特性的影响

Influence of Hydroperoxide on Oxidation of Cr (Ⅲ) to Cr (Ⅵ)

氢过氧化物对皮革中Cr(Ⅲ)转化为Cr(Ⅵ)的影响

Photocatalytic reduction of Cr(Ⅵ) in Cr(Ⅵ)-citric acid-ferric nitrate compound system

Cr(Ⅵ)-柠檬酸-硝酸铁复合体系中光催化还原Cr(Ⅵ)

Effect of the Cr/C on the Microstructure and Properties of High Chromium Cast Iron Containing 31% Cr

Cr/C对31%Cr高铬铸铁组织与性能的影响

Solvent Extraction-Flame Atomic Spectrometry for the Determination of Chromium (Ⅲ) and Chromium (Ⅵ) in River Water;

溶剂萃取—火焰原子吸收分光光度法测定河水中的Cr（Ⅵ）与Cr（Ⅲ）

The Measurement of Content of Cr～(6+) and Cr～(3+) in the Electrochromiuming Solution by Double-Waveleanth Photometric Method;

双波长分光光度法测定镀铬电镀液中Cr～（6+）和Cr～（3+）含量

Studies on Technology and Basic Mechanism of Plating Ni-Fe、Ni-Fe-Cr Alloy Foil and Ni-Cr Alloy;

Ni-Fe、Ni-Fe-Cr合金箔及Ni-Cr合金电沉积工艺和基础理论研究

Reduction of Cr(Ⅵ) to Cr(Ⅲ) by Fe(Ⅱ) in the Presence of Fulvic Acids and in Lacustrine Pore Water

黄腐酸和湖泊微孔水对Fe(Ⅱ)还原Cr(Ⅵ)为Cr(Ⅲ)的影响

Discussion on the Effect of Chromium in Nodular Iron--Application of Cr in As-Cast Nodular Iron(Ⅱ)

Cr在球铁中的作用探讨——Cr在铸态球铁中的应用(2)