Methods Trace back and consolidate the nursing materials for the orally poisoning patients in our hospital in the pass 5 years.

方法回顾分析我院近5年口服中毒患者抢救的护理资料。

youdao

The reason is that so far as what we have of reliable language materials, Yin and Zhou Dynasty is the earliest period in Chinese language history that we can trace back.

因为就今可见的确实可靠的语文资料来说，殷周时期是中国语言文献历史当中我们能够追溯的最早的一个阶段。

youdao

Objective: to establish a simple and fast high performance method to determine trace antimony in packaging materials for food.

目的：建立简便、快速、高效的测定食品包装材料中微量锑的方法。

youdao

Many were items that were stripped out of the counter-terrorism legislation earlier in the year -- authority for roving wiretaps and taggants to trace explosive materials.

CNN: D.C. Brigadoon -- Applaud It While It Lasts!

Rather, as a consequence of injecting water and sand into the shale formation to crack the rocks so gas and oil will flow, massive amounts of waste water comes back to the surface with significant amounts of contaminants as a result of leaching out salt, heavy metals and trace amounts of radioactive materials from the rock formation itself.

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New regulations likely to be proposed by the State Department next year may follow guidelines being drafted by the UN and the OECD, a rich-country club, that will advise companies on how best to trace the origin of their materials.

ECONOMIST: Congo's conflict minerals