结果原发性自发性气胸发生率为6 9% ，继发性自发性气胸发生率31% ；

Result The incidence of the primary spontaneous pneumothorax was 69% and the incidence of the secondary spontaneous pneumothorax was 31%.

youdao

结果原发性自发性气胸发生率为6 9% ，继发性自发性气胸发生率31% ；

Result The incidence of the primary spontaneous pneumothorax was 69% and the incidence of the secondary spontaneous pneumothorax was 31%.

youdao