The likely ancestors of the domestic dog date from more than 30,000 years ago. 家犬的祖先可能出现于3万多年以前。
ON A snowy trail that cuts around the trees is a neat line of paw prints which look as though they were made by a domestic dog. 树周围的雪地上有一行清晰可见的爪印,看上去像是家养狗留下的。
The suggestion that the domestic dog originated in East Asia has been challenged. 家养狗起源于东亚的意见遭到质疑。
Preventing human rabies through control of domestic dog rabies is a realistic goal for large parts of Africa and Asia. 对于大部分非洲和亚洲国家来说,通过预防家养犬患狂犬病来预防人患此病是一个切实可行的目标。
Objective To study the domestic dog chromosome abnormalities by karyotyping. 目的通过犬的染色体核型分析,为诊断犬染色体病以及进行犬的分子细胞学研究奠定了基础。
The morphology of the skull and teeth of ten wolves from the northeastern region of China was studied and compared with that of big domestic dog. 对捕捉于东北地区的10只狼颅骨及牙齿形态结构进行了研究并与家养大型狗比较。
The position of Canis lupus variabilis, from zhoukoudian, in the ancestral lineage of the domestic dog, Canis familiaris 周口店变异狼(Canislupusvariabilis)在家畜狗(Canisfamiliaris)祖先系列中的位置
Experimental Study on Domestic Intracranial Balloon Expandable Stent Implantation in the External Carotid Artery of Dog 犬颈外动脉置入国产颅内动脉支架的实验研究
Objective To discuss curative effect of druggery and liquid nitrogen Cryotherapy in treating nodus-type damage on one's face due to the first domestic dog m pachy dermats ( MP). 目的探讨药物联合液氮冷冻治疗由厚皮马拉色菌致面部结节性损害的疗效。
The gastric motility contraction in the domestic rabbit is lower than dog gastric in intensity in the surgery condition in vivo. 手术状态下家兔活体胃运动收缩强度低于犬活体胃运动收缩强度。
So the analysis of the most archaic extant domestic dog breeds in the world at present will be an effective method to reveal the region and time of domestic dog origin. 那么对目前世界上现存的古老犬种进行分析将是揭示家犬发源地和起源时间的有效方法。
The result indicated that using the two-sided arteria carotis communis anterior ligation anaesthesia method to observe the gastric motility in domestic rabbit and dog is a relative good method in the surgery condition. 观察结果表明,经双侧颈总动脉结扎麻醉的方法是手术状态下直视观察家兔和犬在体胃运动的较理想方法。