photocells 

  1. 名詞
photocell複數: 光電池

    
                        
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例句

                

                    
    
                                                    
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                                The problem with photocells is their low efficiency.                            
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                                Photocells are much more efficient and work all year.                            
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                                Selenium is a semiconductor and is used in photocells .                            
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                                These floods simply overwhelmed Kell's imaging photocells .                            
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                                The image falls on the retina at the back, where it excites photocells .                            
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