基本解释[化学]半生期值英汉例句双语例句Half-life: time taken for blood concentration to fall to half its peak value after a single dose.半衰期：在一次剂量服用后药物血液浓度降至最高峰一半时所需的时间。blog.sina.com.cn词组短语短语half -life loan value 半期贷款额;半期贷款值专业释义化学半生期值