Study on ultra - low frequency vibration sensor by using magnetoelectric speedometer 用磁电式速度计实现超低频振动传感器的研究
Clock type speedometer 钟式速度计
The first is dead reckoning , which computes its own positions from the direction and speed data continuously obtained from the gyroscope and speedometer in the vehicle 第一是推测领航，指不断由车辆的陀螺仪和速度计显示的方向和速度数据计算本身的位置。
Your speed will be higher than you think - 70 km h may feel like 50 km h - so be sure to check your speedometer . regulatory signs showing the maximum speed limit for the road 驾驶人的实际车速会较想像中高如以时速70公里行车，可能会觉得时速只是50公里，因此，必须查看速度计。
Among these are a cowcatcher ( to protect straying cattle and people from oncoming trains ) , the single penny postage idea for england , railway signals , the speedometer , ideas on game theory , system of signaling for lighthouses , a compendium of all manufacturing methods and engineering work in britain 其中有排障器（避免迷途的牲畜和人群被急驰而来的火车撞倒) 、在英国实施一便士邮资的建议、铁路信号、速度计、博弈论的思想、灯塔信号系统，以及一份关于英国全部制造方法与工程作业的纲要。
Experimental techniques for simulating cavity decoupling explosion in laboratory wear developed , which include a center initiating explosive charge designed in shape of mini - spherical with yield equivalent to 0 . 125 ~ 8 . 00gtnt , circular electromagnetic particle velocity gages and aluminum bar strain gages measurement techniques , spherical divergent stress waves generator . large amount of tamped and cavity explosion experiments had been made in granite , soil , cement mortar and water media environment , respectively 本文建立起了包括中心起爆的0 . 125 8 . 00gtnt微型球形炸药装置的研制、圆环形电磁粒子速度计及铝杆应变计测试技术和球形发散应力波实验装置等在内的实验室微型药量空腔解耦化爆模拟技术，并在花岗岩、土、水泥砂浆和水等介质中进行了大量的填实和空腔爆炸实验研究。
