siphonal 

  1. 形容詞
虹吸的, 虹吸作用的

    
                        
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例句

                

                    
    
                                                    
  1. 
                                Siphonal canal: an extension of the aperture in certain gastropods                            
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  2. 
                                Sometimes the shell has a siphonal canal to accommodate this structure.                            
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                                Bivalves with long siphons may also have siphonal ganglia to control them.                            
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                                The siphonal canal itself is straight, short and ample; the columella is smooth, without any folds.                            
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                                This, in some types ("Fusinus", etc.) it is drawn out into an anterior siphonal canal, of greater or lesser length.                            
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