corona造句
121. By the time the Sun's corona rays reach the Earth, they are weak and invisible.
122. The ignition energy, efficiency, burning time and main chemical reactions of the pulsed corona discharge ignition(PCD) used on internal combustion engine are discussed in detail.
123. The solar atmosphere above that consists of the photosphere, chromosphere, a transition region and the corona.
124. The results of field experiments show that the corona current network observation system can operate normally in a certain region.
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