[Translation] A multicenter, randomized, double-blind, placebo-controlled clinical study to validate inhalation of ambroxol hydrochloride solution in improving mucous phlegm symptoms in lower respiratory tract infections
验证吸入用盐酸氨溴索溶液改善下呼吸道感染疾病黏痰症状的有效性和安全性。
[Translation] To verify the efficacy and safety of ambroxol hydrochloride solution for inhalation in improving mucous phlegm symptoms of lower respiratory tract infections.