crude sand 中文意思是什麼
crude sand
解釋
原產硅砂-
The cyclones with short cone are used for crude grading of minerals with heavier specific gravity in gold mines, sand gold mir. es and sulphur ore mines and have such advantages as small ground occupation, high capacity, high operating flexibility, low energy consumption and high movability etc
短錐分選旋流器用於金礦、砂金礦、硫化礦等比重較大的礦物的粗選作業，具有佔地面積小，處理能力大，操作彈性大，能耗低，可移動性強等優點。 -
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。 -
The foundation are formed by the inter - layer of fine and crude earth, in the different level of the layer, are distributed lenticular sand, which result in the poor uniformity
由粗、細粒土相互迭置成層，層內不同高程上有透鏡狀砂層分佈，均一性較差，地基可能出現不均一沉陷變形。
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