The S&P materials sector trades at a below-index P/E ratio of 15.3, and the industrial sector is at just 17.2.
标普在低于指数的P / E为15.3比材料界的行业，产业部门仅为17.2。
Patented H. E. P. A. filtered vacuum for the recovery of lead, dust, paint chips, and other hazardous materials.
拥有专利技术，用于回收铅、尘土、油漆片和其他危险材料。
This research conducted an investigation and quantitative analysis on the 110 college P. E. teaching materials collected from 1993 to 2003. Based on the analysis, an investigation report was formed.
对收集到的1993 - 2003年出版的110本高校体育课程教材进行调查和定量分析，在此基础上形成调查分析报告。
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