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- magnetic needle declination 磁针偏角
- The magnetic needle points to the north. 磁针指向北方。
- The magnetic needle points to the south. 磁针指向南面。
- Do you know who invent magnetic needle? 你知道指南针是谁发明的吗?
- The iron in the ship caused a deviation of the magnetic needle of the compass. 船上的铁导致了罗盘磁针的偏离。
- A device that eliminates or progressively diminishes vibrations or oscillations,as of a magnetic needle. 阻尼器，避震器用来消除或逐渐消除震动或摆动的设备，如磁针的
- A device that eliminates or progressively diminishes vibrations or oscillations, as of a magnetic needle. 阻尼器，避震器用来消除或逐渐消除震动或摆动的设备，如磁针的
- An instrument used to detect the presence and determine the direction of electric currents by the deflection of a magnetic needle. 验电器一种利用磁针的偏传检测电流存在及测定其方向的仪器
- The rectangular brass frame surrounds a high-visibility magnetic needle that pivots on an adjustable support. 一个清楚可见的磁针以一可移动的轴支撑，旁边的矩形框架是黄铜制成的。
- The pulse magnetic needle apparatus can increase the expres-sion of bFGF, prolong the time of expression, improve blood supply,abate injury of CNS. 脉冲磁针仪可使bFGF表达增加，表达时限延长，改善供血，减轻中枢神经元损伤；
- The needle is made of some parts such as minus pressure needle theca, polar mark, transparency magnet, forceful magnetic needle, defensive rubber circle and so on. 由负压针囊、强力磁针、透明磁宫、极性标体、防护胶圈等部件组成。
- This method was rarely used because the magnetic needle would easily slide.The second was to hang the magnetic needle in a windless place using a piece of silk. 由于航海事业发展的需要，人们又开始使用了以此为原料水浮式指南针在阴雨天辨别方向。
- A device used to determine geographic direction, usually consisting of a magnetic needle or needles horizontally mounted or suspended and free to pivot until aligned with the magnetic field of Earth. 指南针用于确定地理方向的设备，通常包括一个或多个水平安装或悬挂的磁针，可在枢轴上自由活动直到与地球磁场在一条线上
- A compass is essentially a magnetized needle mounted in such a way that it can swing freely. 实质上，指南针就是一个支起来能自由摆动的磁针。
- He broke into the long easy lope, and went on, hour after hour, never at loss for the tangled way, heading straight home through strange country with a certitude of direction that put man and his magnetic needle to shame. 他突然轻快地奔驰起来，一小时接一小时地跑，从没因路径的错综复杂而迷路，他越过陌生的地带，一直朝家跑回去，方向准确得都要令人类及其罗盘针自愧不如。
- the deviation of the magnetic needle 磁针的偏差
- She was given a needle for whooping cough. 她因患百日咳打了一针。
- The speedometer needle touched100. 速度计的指针转到一百哩。
- Dalian is a magnet for tourists. 大连是吸引游客的地方。
- She tried to needle me into losing my temper. 她想方设法惹我发脾气。
