详细解释:n. 压载物, 压舱物
【经】 底货, 压舱货
词型变化：
动词过去式:ballasted过去分词:ballasted现在分词:ballasting第三人称单数:ballasts英语解释：
名词 ballast:
any heavy material used to stabilize a ship or airshipcoarse gravel laid to form a bed for streets and railroadsan attribute that tends to give stability in character and morals; something that steadies the mind or feelingsa resistor inserted into a circuit to compensate for changes (as those arising from temperature fluctuations)同义词：ballast resistor, barretter