Have recommended the collision experimental result of the model of the capsule scheme filling with water design the pier anticollisiondevice of Wuhan Yangtze River Bridge tentatively.
根据充水胶囊方案模型的实验结果，初步设计了武汉长江大桥的桥墩防撞装置。
2
Using reflective near infrared sensor and voice record-reproducing assembly, the present article studies the voice anticollision-prompting device for backing an automobile.
利用反射式近红外传感器及语音录放组件，研究了汽车倒车防撞语音提示器。
3
Using ultrasonic wave intelligent distance-measuring sensor and voice record-reproducing circuit, a voice anticollision-prompting device for backing an automobile is designed.