In case of a positive screening test, confirmation of results must be carried out via more complex chemical analysis.
如果筛选检测呈阳性，就必须通过更加复杂的化学分析来确认结果。
The project succeeded in screening 346 sites with potential chemical contamination risks and identifying 58 priority pollution sources for follow-up mitigation actions.
通过对346个具有潜在化学污染风险的点进行筛查，这一全球环境基金项目识别出58个重点污染源作为采取后续措施的重点。
Widely used in mineral processing, building materials, silicate and chemical industry in the rubble, the joint screening devices.
广泛应用于选矿、建材、硅酸盐和化学工业中的碎石、筛分联合设备中。
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