名词
中文翻译：次级发射体
同义词：
['secondary source', 'secondary discharge', 'secondary emission例句：1. The secondary emitter in the circuit is responsible for the current flow.（电路中的次级发射体负责电流流动。）2. The secondary emitter in the photovoltaic cell converts sunlight into electricity.（光伏电池中的次级发射体将阳光转换为电能。）']
例句：
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1. The secondary emitter in the circuit is responsible for the current flow.
电路中的次级发射体负责电流流动。
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2. The secondary emitter in the photovoltaic cell converts sunlight into electricity.
光伏电池中的次级发射体将阳光转换为电能。
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3. During the experiment, the secondary emitter produced a spark.
实验过程中，次级发射体产生了火花。