detection of harmful substances 有害物质检测
reducing harmful substances of cigarette smoke 香烟降害
report on incident involving harmful substances 有害物质事件报告
Toxic and harmful substances 有毒有害物质
Harmful Chemical Substances 有害化学物质
against Harmful Effects 危险影响
analysis of the hazard and harmful factors 危险、有害因素分析
bad (harmful) practice 有性生殖; IPM(智能功率模块); 不正之风
benefical or harmful element 生命元素特征
combustion unit of harmful gas 有害气体燃烧器
concentration of harmful substance 有害物质浓度
danger and harmful factor 危险有害因素
dangerous and harmful factors 危险有害因素; 危害因素
did not seem to be harmful to humans 看来对人体无害
environmentally harmful 对环境有害的
exotic harmful plant 外来有害植物
Five harmful elements 五害元素
Five-Harmful Elements 五害元素
forestry harmful biology 林业有害生物