Canal engineer Canvass White solved one of the construction obstacles when he discovered how to create a cement that hardened underwater.
运河工程师Canvass White解决了一个施工难题,他发明了水下硬化水泥。
Canal engineer Canvass White solved one of the construction obstacles when he discovered how to create a cement that hardened underwater.
运河工程师Canvass White解决了一个施工难题,他发明了水下硬化水泥。
应用推荐