通風器罩 的英文怎麼說

中文拼音 [tōngfēngqìzhào]
通風器罩 英文
ventilator hood
  • 通 : 通量詞（用於動作）
  • 風 : Ⅰ名詞1 （空氣流動） wind 2 （風氣; 風俗） practice; atmosphere; custom 3 （景象） scene; view 4 ...
  • 器 : 名詞1. （器具） implement; utensil; ware 2. （器官） organ 3. （度量; 才能） capacity; talent 4. （姓氏） a surname
  • 罩 : Ⅰ動詞（遮蓋; 扣住; 套在外面） cover; overspread; wrap Ⅱ名詞1 （罩子） cover; shade; hood; casing;...
  • 通風 : 1 （使空氣流通） ventilate; air 2 （透氣） be well ventilated 3 （透露消息） divulge information;...
  1. In this paper, the author established the model of objective evaluate parameters of sound quality and develope d an objective evaluation system which could give quantitative objective evaluate parameters, such as loudness, sharpness, roughness, psychoacoustics annoyance ( pa ) etc. paper also describes an subjective evaluation investigation ir " " hich 16 subjects used pair comparison statistical evaluation methods to evaluate the noise character of room air - conditioners, the results show that there is generality good agreement between quantitative objective evaluate sound quality parameters and subjective evaluation. at the same time an example of application of the technique to improve the noise character of room air - conditioner is offered

    此外本文還介紹了一個應用聲質量評價技術改進kfr - 50hw / e2d空調器聲質量的實例，通過對空調器室外機管系、導流罩、出風網等進行改進，空調器的聲質量得到了明顯改善：在室外風量提高164m ~ 3 / h情況下，聲音響度下降16 ，波動強度明顯改善，尖銳度指標也略有下降，作者同時總結了不同改進措施對產品聲質量影響的方式，以期為今後的聲質量改進提供借鑒。
  2. This new technology changes from the traditional method by which the induced and compressor wheel separately are designed and produced to a new one by which the one - piece compressor is designed. on the basis of this new technology and the optimum blade profile, the performance of both the compressor and the turbocharger is largely improved. through the heating power calculation of the compressor, the analysis of the surge and the block of the compressor, the test - bed performance test of the turbocharger, the matching test of turbocharger and diesel engine, the propulsion test of the turbocharger on plateau condition, it is proved that the newly - designed compressor not only has high efficiency, but also improves the flow distribution in the high efficiency area so that the propulsion line can run through the high efficiency area

    主要內容包括：提出一種全新的壓氣機葉輪技術和概念，這種技術將傳統的導風輪和壓氣機分開設計、單獨加工改為整體設計、整體加工的單體葉輪；從增壓器與柴油機配機計算所得出的基本參數出發，通過對壓氣機進行熱力計算，確定壓氣機的基本結構參數；再對葉型以及葉輪輪廓與葉輪罩殼的配合間隙進行優化，對新設計的壓氣機進行喘振和堵塞分析；通過增壓器平臺性能試驗，驗證了新設計的壓氣機的性能水平得到了較大的提高，達到了提高增壓器的整體性能水平的目的；通過增壓器與柴油機配機試驗、以及增壓器用於高原條件下的牽引試驗，驗證了新設計的壓氣機不但具有高效率，還改善了高效率區的流量分佈，使牽引特性線貫穿高效率區。
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