您要查找的是不是：
- A piece of soft iron connecting the poles of a magnet. 衔铁一片连接磁极的软铁
- Having the properties of a magnet. 具磁性德具有磁体的特性的
- Unlike other Hall-effect switches, either a north or south pole of sufficient strength will turn the output on; in the absence of a magnetic field, the output is off. 不像其他霍尔效应开关,无论是南北极足够的实力将输出;在没有磁场时,输出关闭。
- It shows the presence of a magnetic field. 这表明有磁场存在。
- The lines of force of a magnetic field. 磁力磁场的磁力线
- The needle of a magnetic compass points to the magnetic north pole. 磁性罗盘上的指针指向北方磁极。
- Passing the tip of a wand reader over a magnetically encoded stripe of a merchandise ticket, credit card, or employee badge. 将条形码读入器的端部在商品标签、信用卡和雇员证的磁性编码条纹上扫掠以读入信息。
- a piece of soft iron connecting the poles of a magnet 一片连接磁极的软铁
- pole of a magnet 磁极
- How, then, does EMR work in the absence of a magnetic material? 如果这样，那EMR为何不需要磁性材料？
- A bar used with a double harness to connect the collar of each horse to the pole of a wagon or coach. 轭状物用双马具把每个马轭连到四轮运货马车或公共马车的辕杆上的木条
- Our flag is raised to the top of a pole by a rope and two pulley. 我们的旗帜被用一根绳子和两个滑轮升到了竿顶。
- One of the earliest uses of a magnet was as a compass. 磁铁最早的用途之一是作为指南针。
- At the caudal pole of the left kidney, search for evidence of a left ovary. 在左肾的尾端极点，寻找左侧的卵巢。
- The cake we made was somewhat of a failure. 我们做的蛋糕不大成功。
- Will you partake of a drink with us? 和我们一同喝一杯好吗？
- He doubles the parts of a farmhand and a miner. 在这出戏里他既扮演雇农又扮演矿工。
- We report a case of a 42-year-old woman with cystic nephroma arising from the lower pole of the right kidney with microscopic foci of sarcomatous stroma. 我们在这里报告一个42岁女性诊断为右肾下端的囊肿性肾细胞瘤合并有小部分的肉瘤性实质变化。
- He let himself down slowly by means of a tope. 他借助一根绳子慢慢地下来了。
- A bar used with a double harnessto connect the collar of each horse to the pole of a wagon or coach. 轭状物用双马具把每个马轭连到四轮运货马车或公共马车的辕杆上的木条。
