Systemic acute toxicity of denture soft-liner was measured by hemi-lethal dose test (LD50),as a essential selected method for studing toxicity of medical biomaterials.是什么意思_Systemic acute toxicity of denture soft-liner was measured by hemi-lethal dose test (LD50),as a essential selected method for studing toxicity of medical biomaterials.在线翻译_英语_读音_用法_例句