机械辅助排痰技术在大容量双肺同期灌洗治疗煤工尘肺的应用
궤계보조배담기술재대용량쌍폐동기관세치료매공진폐적응용
The machinery assistance platoon phlegm technology fills same time in the large capacity double lung washes the treatment coal labor pneumoconiosis the application
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