The primary classification describes the main hazardous property of a hazardous waste.

主要类别描述危险废物的主要的危险性质。

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Gather the sample of suspected hazardous waste (the chromium dreg), measured chromium in the lixivium, confirmed its property, analyzed its characteristic of pollution.

采集疑似危险废物含铬碳渣的样品，检测其浸出液中的总铬和六价铬含量，确定其性质，分析其污染特征；

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Fire officials said Thursday afternoon that a hazardous materials team will deal with a store of highly toxic pesticides that caught fire at a Laguna Farms property near the university, according the Ventura County Star.

NPR: Fire Forces Evacuation Of Campus, Homes In Calif.