N95 is one of nine classifications forNationalInstituteforOccupationalSafetyandHealth (NIOSH) certified particulate respirators.
N95是美国国家职业安全健康研究所(NIOSH)认证的9种级别的防颗粒物呼吸防护口罩中的一种。
2
Yet another team of scientists are working on this chemical at the NationalInstituteforOccupationalSafetyandHealth in Morgantown, w.v..
来自西弗吉尼亚州摩根城的美国职业安全健康研究所的一组科学家正着力研究4 -羰基戊醛。
3
According to the NationalInstituteforOccupationalSafetyandHealth, in 2005, there were 91 worker deaths in the American logging industry, which had 106,000 employees.