Proper infection dosage and routes were selected to make the chickens artificially infect avian colibacillosis successfully.选择适宜的攻毒剂量和攻毒途径,诱发淮南麻黄鸡大肠杆菌病.The dosage of technological parameter and feasible emulsification an...
外面的叫喊声越来越大。The shouting outside grew louder.裁判对要求判罚点球的叫喊声不予理睬。The referee ignored voices baying for a penalty.伤员发出一阵痛苦的叫喊声.The wounded man let out a cry of pain....
The motorist enjoys an unobstructed view of the natural scenery as he drives across the bridge.汽车驾驶员在开车过桥时,可以一览无余地观赏自然风光.Bite block and tongue depressor. insuring unobstructed ventilation.用于防止舌后坠, 保障患者正常通气.Pressure and f...