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- An impulse that, in a neutral circuit, causes the loop to open or causes absence of signal. In a polar circuit it causes the loop current to flow in a direction opposite to that for a mark impulse. A space impulse is equivalent to abinary zero. 在中性电路中,引起环路断开或造成信号消失的一种脉冲(信号)。在极性电路中,空号脉冲促使环路电流向传号脉冲相反的方向流动。空号脉冲相当于二进制零。
- The two systems of government are polar opposites. 这两种政体正好相反。
- The issue has polarized congress. 该争论于国会分裂。
- Public opinion has polarized on this issue. 在这个问题上公众的意见已两极分化。
- Most insect do not live in polar region. 大多数的昆虫不在极地地区生存。
- There are two breakers in this circuit. 这个电路里面使用了两个断路器。
- Showing no optical activity in polarized light. 无旋光的极化光下无光学反应的
- A replaceable printed circuit board. 一种可替换的印制电路板。
- Are there any animals in the polar circles? 南极圈和北极圈内有动物存在吗?
- The circuit of the city walls is three miles. 环绕本市城墙的周长是三英里。
- There must be a break in the circuit. 电路中一定有断路。
- A short circuit will blow the fuse. 短路会烧断保险丝的。
- 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
- A short circuit put the machine out of action. 短路使机器停转。
- 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 switches close the contacts and complete the circuit. 这些开关可使接触器接通电流形成回路。
- The polar region is the habitat of the polar bear. 北极地带为北极熊的栖息地。
- 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。
- 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。
- Don't connect up the two wires, or there will be a short circuit. 不要把这两条电线接在一起,否则会短路的。