无害性 meaning in English

harmlessness
innocuousness

As we all know that has no harm to human , whereas it can accelerate for sleeping
对人体无害性早已众所周知，反之有促进睡眠的作用。
B 、 as we all know that has no harm to human , whereas it can accelerate for sleeping
对人体无害性早已众所周知，反之有促进睡眠的作用。
How pe and ppr used in china for drinking water application tested to be non harmful to human health
在中国，输送引用水的pe和ppr管道对人体健康的无害性是如何被检测的？
The author analysis and summary in details the important physicochemical character of maifan stone , including mineralize , organism activity bi - directional adjusting character , decolour , and no poisonous character and so on
作者详细的分析和总结了对于麦饭石应用至关重要的物理化学性质，包括矿化性、溶出性、吸附性、生物活性、双向调节性，脱色性和无毒无害性等。