watertight pitch的意思|示意
美 / /
英 / /
watertight pitch相关例句
To make(a boat) watertight by packing seams with a waterproof material, such as oakum or pitch.
麻纤维，有时涂上焦油、杂酚或沥青作保护层，主要用于木船上捻缝和填塞管子接头。