Cortisone should never be used as It'suppresses the immune system of an already compromised animal.Cortisone(可的松)是绝对不能使用的,他会影响到动物的免疫系统.However, cortisone therapy and medicinal implants kept Kennedy alive.然而, 可的松治疗和药...
航空航天系列.飞行器用电缆.试验方法. 第508部分: 电镀板厚度.Aerospace series - Cables electrical , aircraft use - Test methods - Part 508: plating thickness.用电缆直接向接受器传输信号的电视.A communications cable as one used to transmit telephone or telegraph si...