您要查找的是不是：
- P2 denotes the primary pole, S1 and S2 denote the secondary poles ,P2and S2 are homonymy poles (subtractive polarity). P2表示一次级性端，S1、S2表示二次级性端；P2和S2在同一瞬间具有同一级性（减级性）
- P2 denotes the primary pole, S1 and S2 denote the secondary poles. P2 and S2 are homonymy poles (subtractive polarity). P2表示一次极性端，S1、S2表示二次极性端；P2和S2在同一瞬间具有同一极性（减极性），
- P2 primary pole, S1S2 secondary poles. P2S2 are homonymy poles (subtractive polarity). P2表示一次极性端，S1、S2表示二次极性端；P2和S2在同一瞬间具有同一极性（减极性）。
- P2 primary pole, S1 and S2 secondary poles. P2 and S2 are homonymy poles (subtractive polarity). P2表示一次极性端，S1、S2表示二次极性端；P2和S2在同一瞬间具有同一极性（减极性）。
- The two systems of government are polar opposites. 这两种政体正好相反。
- If you subtract 2 from 8, you get 6. 8减去2是6。
- Most insect do not live in polar region. 大多数的昆虫不在极地地区生存。
- Subtract 3 from 7 and you have 4. 七减三得四。
- Are there any animals in the polar circles? 南极圈和北极圈内有动物存在吗？
- subtractive polarity 负极性
- 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
- The little girl has begun to learn to add and subtract. 这小女孩已在学做加减法了。
- 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。
- If you subtract 3 from 5, you get 2. 五减去三就得二。
- The polar region is the habitat of the polar bear. 北极地带为北极熊的栖息地。
- If you subtract two from five you get three. 五减去二剩下三。
- The children are learning to add and subtract. 孩子们学做加减法。
- Note the polarity of the voltage drop across R. 注意R上电压降的极性。
- 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。
- Of or being a subtractive primary color. 相减基色的或成为相减基色的
