contra rotating 中文意思是什麼
contra rotating
解釋
對轉- contra : n. 1. 反對（意見），反對票。2. 【會計】對方〈尤指貸方〉。adv. 反對地。對于。 contra credit [debit] 對于貸方[借方]。
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Improvement of model fd contra - rotating auxiliary fan
型對旋式局部通風機的改進研究 -
Test study of two - speed contra - rotating auxiliary fan
雙速對旋式局部通風機的試驗研究 -
Numerical simulation of internal flow of contra - rotating axial flow fan
飛行器后體一體化數值模擬 -
In addition, it is useful in some places that contain harmful air and air is needed is needed to input. on the other hand, based on the theory of aerodynamics, the optimum structural factors for contra - rotating axial local fan are studied
根據軸流式通風機空氣動力學理論，在分析了普通軸流式通風機的結構對氣動力性能參數影響的基礎上，對對旋式軸流通風機的有關氣動力參數和結構參數進行了綜合優化分析研究。 -
On the basis of analyzing the aerodynamical property and the construction of usual axial fan, the aerodynamical property and the construction of contra - rotating axial local fan are studied in the paper. moreover, author has designed a kind of contra - rotating local fan, which has the characters of low noise, high efficiency, well aerodynamical performance, optimum structure, and large power
本文在分析了普通軸流式通風機的氣動力特徵和結構的基礎上，研究了對旋式軸流通風機的氣動力特性和結構特點，設計並製造出了一種風量大，風壓高，噪聲低，效率高，氣動性能好，體積小，結構新穎的2 30kw新型大功率對旋式軸流局部通風機樣機。 -
The problem of noise of the fan is studied with the non - linear theory, and pressure pulsation of axial flow fan ' s inside flow was measured by dynamic pressure sensor, the gas - structure coupled noise of contra - rotating axial flow fan was studied through a new perspective
摘要用非線性動力學的理論對風機噪聲問題進行了分析，同時運用實驗手段測量了軸流風機流場內部流動的壓力脈動，從全新的角度研究了對旋風機的氣固耦合噪聲。 -
Contra rotating propeller
對轉螺槳 -
The contra - rotating axial local fan can be used extensively in the large digging face and long distance ventilation in the mine
該通風機可廣泛應用於礦井大斷面、長距離掘進巷道和具有有害氣體及需要大風量的工作場所通風。
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