ประโยคภาษาจีน : 中文句子 |
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mù dì 目的 diào chá 调查 tóng rén dì qū 铜仁地区 rén qún 人群 bái hóu 白喉 miǎn yì 免疫 shuǐ píng 水平 kǎo hé 考核 yù fáng jiē zhòng 预防接种 xiào guǒ 效果 |
Objective:In order to investigate the level of diphtheria immunity in Tongren Prefecture and to detect the effect of preventive inoculation. |