ballasting 

  1. 名詞
不可數名詞: 加壓艙物, 壓載物
鋪道碴
壓艙材料, 道碴材料

    
                        
    2. 
                                                                        
  2. 

    動詞
ballast現在分詞:
及物動詞:
給...(船等)裝壓艙物
用壓艙物使...(船等)穩定
給...(鐵路等)鋪道渣

    

    
                        
    3. 
                                            

                

            

            
            

                

                
例句

                

                    
    
                                                    
  1. 
                                Depth of ballasting 1 foot 6 inches.                            
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  2. 
                                This ballasting started the system moving.                            
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  3. 
                                By 1908, ballasting and platelaying had reached Kiwi station.                            
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  4. 
                                The usual top ballasting and tamping will commence later in the week.                            
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  5. 
                                Widening and ballasting the grade is progressing north of Willow Creek.                            
    6.