buoyat density,ρ

用法例句

The feasibility and economy of the water transfer project construction of inner PE lined soft pipe and outer soil-cement paded and water-tight have been specified according to the local experiment data.

根据当地试验资料，论证了“内村ＰＥ软管外护水泥土（水浸密实法）输水工程”建设的可行性和经济性。