船舶: shipping; boats and ships; vessel; watercraft; water-dipper
密度: 1.(密集的程度) density; thickness 短语和例子火力密度 density of fire; 兵力密度 density of troops; 那个国家的人口密度为每平方英里685人。 the population density of that country is 685 per square mile.2.[物理学] (物体的质量和其体积的比值) de
Example Sentences:
1.
Its development is to satisfy the increasing requirements caused by the rapid development of waterborne traffic and the rise of vessel density 它的发展适应了水上交通运输的迅速发展及船舶密度急剧增加的需要。
