美国油污法和正在制订的IMO新的有关船舶大气污染的规定，都将使造船和航运业带来环境保护的新挑战。

The US "OPA 90"and the new regulations for marine engine emission worked out by IMO will bring forth the challage to the shipbuilding and shipping enterprises for environmental protection.

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在实验室中用同位素示踪法，研究了土壤中不同石油污染量对氮矿化及硝化速率的影响。

Isotope dilution method was adopted in lab for the study of the effect of crude oil contamination on the rate of nitrogen mineralization and nitrification in soil.

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分析铜质导电零件沥青胶质油污的形成，在生产实际中采用强酸强碱热态中和法，有效地去除胶质油污。

In practice, asphalt-colloid smear was formed on copper electric parts and effectively purged by means of thermal neutralization with strong acid and alkali.

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