free surface area 中文意思是什麼
free surface area
解釋
自由表面積-
This thesis discusses the problem free - surface modeling technique of turbine blade according to the property of the runner blade and the present research achievement in free - surface modeling technique, the major study concerned are introduced below : firstly, it accomplished the study of intersection for blade - to - plane and present the method of three - step algorithms such as subdivision > iterative refinements approach ; meanwhile it solved the problem of small area extend of blade by use minimal modulus method
本文針對水輪機葉片的特點，結合曲面造型技術的研究現狀，研究了水輪機葉片的nurbs曲線曲面造型問題。主要工作有：第一，完成了葉片與任意平面求交問題的研究，提出分割-迭代-擬合三步求交演算法。同時首次應用最小二乘擬合端部法解決了葉片的小區域延展問題。 -
Pt desulfurizer is a new and effective product with high surface area. sulfur capacity, crushing strength and free volume and low pressure drop. which is widely used in the fine desulfurization of purification process of oil and gas material in synthetic ammonia, methanol and hydrogen making industries
Pt氧化鋅脫硫劑是一種新型高效脫硫劑，具有比表面積大，穿透硫容高，機械強度高，堆積空隙大，床層壓降小的特性，廣泛應用於合成氨、甲醇和制氫等工業原料氣、油的濃度脫硫凈化過程。 -
Water moves across the soil surface away from the drip emitter until the infiltration rate of the ponded area matches the emitter discharge rate. beyond this free - water pond water moves into the soil by unsaturated flow. it is very important to research the characteristic and pattern of trickle source infiltration
滴灌條件下水分運移的本質是微源入滲過程，因此，為了充分發揮滴灌優勢，正確調控作物的土壤水分條件，對微源入滲特性規律的研究非常必要。
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