The evaluation of measuring uncertainty in metallic material Brinell hardness test is studied by testing the hardness of the 45 quenched and tempered steel.

以45#调质钢硬度试验为例，研究了金属材料布氏硬度试验中测量不确定度的评定。

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Technical support for local manufacturing covering new supplier evaluation, raw material testing, packing material and label evaluation.

产品本地化生产的技术支持，评估新供应商，原料，包装和标签。

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Based upon the actions taken and our testing and evaluation of the effectiveness of our internal controls, we have concluded the material weakness related to controls over the period-end financial reporting process no longer existed as of December 31, 2010.

FORBES: Numbers At General Motors Just Don't Add Up