论文为磁流体 加速度传感器 的研制奠定了一定的基础.The thesis is founded to guide the magnetic fluid acceleration sensor's fabrication. "目的制备一种稳定的 水基 磁流体.Objective To prepare a stable water - based magnetic fluid.磁流体发电是一种直接发电方式.MHD generati...
由于幼虫对药物有免疫力，因此必须经常喷药。Because of the immunity of the immature insects, it'simportant to spray regularly.成人往往对风疹有免疫力。Adults are often immune to German measles.新来的人对这一疾病在当地的几种类型缺乏免疫力.The newcomers lacked immunity again...