The effect of processing on the Pb and Cu pollution of tea was studied in this paper.
研究了初制加工对茶叶铅和铜污染的影响。
Compared with sole Cu pollution, under Cu-pyrene combined pollution, there was no obvious difference in physiology and biochemistry of ryegrass.
铜-芘复合污染与铜单-污染相比，黑麦草生理生化性质并无明显差异。
Therefore, keeping clean in workshop and regulating the metal constitution of rolling machine could reduce the Pb and Cu pollution during tea processing.
因此，保持加工场所的清洁卫生和调整揉捻机揉筒和揉盘的金属组成是降低茶叶加工过程中铅和铜污染的有效途径。
The paper discusses the effect of Cu pollution in various soils on the yield of rice. The viewpoint about the critical value of Cu pollution in farmland and decreasing rice yield is described.
该文探讨了各类土壤中铜污染对水稻产量的影响，并就农田中铜污染浓度与水稻减产的临界值作了阐述。
The result shows no pollution of Cu in these six kinds of vegetables.
结果表明：这六种蔬菜均未受到铜的污染。
The result shows no pollution of Cu in these six kinds of vegetables.
结果表明：这六种蔬菜均未受到铜的污染。
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