名词
中文翻译：正半波
同义词：
['positive wave', "positive phase例句：1. The positive half-wave of the wave is where it's most intense.（波的正半波是它最强烈的部分。）"]
例句：
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1. The positive half-wave of the wave is where it's most intense.
波的正半波是它最强烈的部分。
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2. In the positive half-wave, the electrons move in a straight line.
在正半波中，电子以直线移动。
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3.The positive half-wave is responsible for the flow of electricity.
正半波负责电流的流动。