ballast space
常见例句
- Before entering an enclosed space such as ballast tank, what action will you take?
在进入封闭空间前，（如压载水舱）应作什么准备工作？
blog.sina.com.cn - Pumping means are immersed in the ballast 4 to ensure the extraction of water and to cause the vertical shifting of the building in the out position for interaction with the surrounding space.
泵送装置浸没在压载物4中以确保水被抽出，以及使处于与周围空间相互作用的外部位置的建筑物竖直移动。 返回 ballast space