It had rained all night in Lhasa and the earth was wet and cold.From the mountains a pleasant breeze blew as I drove towards Nyingchi on the Tibet-SichuanHighwa
对120名低温作业者进行心电图检查,其心电图异常率较对照组高,差异有显著性,提示低温作业对心血管系统有一定影响。
120 low temperature workers ECG examination, ECG abn
Our story goes back to late April 2006, just before May Day.In Beijing, a local newspaper reported that at a construction site,migrant workers trom poor rural v