ประโยคภาษาจีน : 中文句子 |
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duì 对 zì fā xìng 自发性 hé 和 shí yàn xìng 实验性 chú jī 雏鸡 bái lì 白痢 bìng 病 jìn xíng 进行 le 了 bìng lǐ 病理 xíng tài xué 形态学 guān chá 观察 |
Pathorphological observation of naturally occurring and experimental pullorum disease of chicks was conducted. |