砂石碴 的英文怎麼說
中文拼音 [shādànchá]
砂石碴
英文
sand ballast-
Coarse gravel or crushed rock laid to form a bed for roads or railroads
道碴用來鋪公路或鐵路路基的粗砂礫或碎石This thesis is to analyze the project of ertan hydropower station in order to have an optimizing selection of the place for sand & stone by the means of systems analysis. this thesis will built a system to seek a best scheme about optimizing selection of the place for sand & stone by the means of analyzing and counting the basic data, building different mathematical modeling on base of man - made & machine - made stone, using dug stone and different sources of crude stone and the mixture of several material
本文以實際工程為例,建立了料場的優化選擇系統,對原始數據的採用進行分析計算,針對人工砂石料、石碴料的利用、天然砂石料幾種不同的料源及幾種料源混合使用的情況,分別建立數學模型,進行解算,尋求較優的砂石料場選用方案。
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