With proprietary technology of ventilative and perforative solution, the LED light source's brightness decay could be lower than 5%.

采用通风穿孔式散热的专利技术，使LED光源光衰小于5%；

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Methods: 169 cases of gangrenous or perforative appendicitis were divided into the drainage group and the non-drainage group. Infection rates between the 2 groups were compared.

方法：将16 9例坏疽穿孔型阑尾炎分为引流组和非引流组，比较2组的切口感染率。

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Methods: 169 cases of gangrenous or perforative appendicitis were divided into the drainage group and the non-drainage group. Infection rates between the 2 groups were compared.

方法：将16 9例坏疽穿孔型阑尾炎分为引流组和非引流组，比较2组的切口感染率。

youdao