Localexhaustventilation or other engineering controls are normally required when handling or using this product to avoid overexposure.
使用时避免过度暴露，必要时使用当地抽风系统或其它工程控制。
2
Such controls typically involve the use of localexhaustventilation, work practice modification, and personal protective equipment in order to reduce exposure potentials.
这些控制一般包括使用局部通风系统、工作实践改善和个人防护用品，来减少暴露浓度。
3
General ventilation, localventilation, task air supply, air distribution, air supply, exhaust.