您要查找的是不是：
- The two systems of government are polar opposites. 这两种政体正好相反。
- Design of polarity detector for terminal velocity correction and attitude control system 末修姿控系统极性检测仪设计
- Most insect do not live in polar region. 大多数的昆虫不在极地地区生存。
- Are there any animals in the polar circles? 南极圈和北极圈内有动物存在吗？
- polarity detector 极性检测器
- Located or found in one of the Polar Regions. 环极的，围绕极地的位于或发现于一个极地区域中的
- In spite of vigilance a polar bear escape from the zoo. 尽管警戒很严，北极熊还是逃出了动物园。
- The polar region is the habitat of the polar bear. 北极地带为北极熊的栖息地。
- Note the polarity of the voltage drop across R. 注意R上电压降的极性。
- A marine detector is a hydrophone. 海洋检波器是水中地震检波器。
- Although they can swim, the polar bears are terrestrial animals. 北极熊虽然会游泳，但也是陆栖动物。
- Thermopile is usually a blackened thermal detector. 热堆一般是个涂黑了的热探测器。
- In spite of vigilance a polar bear escaped from the zoo. 尽管警戒很严，北极熊还是逃出了动物园。
- The detector tube is filled with nitric oxide. 检测管中充满了氧化氮。
- The polar bear's habitat is the icy waters of the Arctic. 北极熊的栖息地是冰冷的北极海域。
- Establish proper injector and detector temprature. 给进样口和检测器设定恰当的温度。
- Love and hatred are polar feelings. 爱与恨是完全相反的感情。
- Please walk through the metal detector. 请走过金属检测器。
- Extending across or crossing either of the Polar Regions. 横越极地任一个横越或穿过两个极地地区中的
- Design Digial Versatile Metal Detector. 种数字式金属探测器设计。
