迎風斷面積 的英文怎麼說

中文拼音 [yíngfēngduànmiàn]
迎風斷面積 英文
projected area
  • : 動詞1. (迎接) go to meet; greet; welcome; receive 2. (對著;沖著) move towards; meet face to face
  • : Ⅰ名詞1 (空氣流動) wind 2 (風氣; 風俗) practice; atmosphere; custom 3 (景象) scene; view 4 ...
  • : Ⅰ動詞1 (分成段) break; snap 2 (斷絕;隔斷) break off; cut off; stop 3 (戒除) give up; abstai...
  • : Ⅰ名詞1 (頭的前部; 臉) face 2 (物體的表面) surface; top 3 (外露的一層或正面) outside; the ri...
  • : Ⅰ動詞(積累) amass; store up; accumulate Ⅱ形容詞(長時間積累下來的) long standing; long pending...
  • 迎風 : 1 (對著風) facing the wind; against the wind; windward 2 (隨風)down the wind; with the wind3 ...
  • 面積 : [數學] area
  1. For hoods with shutters in four sides, the results show : 1 ) the hoods positively placed boards are called hoods used for venting airflow ; hoods negatively placed boards are called hoods used for leading airflow ; 2 ) among the hoods used for venting airflow, the most effective hoods should have positive declining angle value of 30, the ratio 4 of areas between the four windward faces and the gular section ( fy / fj = 4 ), the value of b range from 70 mm to 120 mm and the value of b / h range from 0. 5 to 0. 6 ; 3 ) the most effective hoods should have negative declining angle value of 60, the ratio 4 of areas between the four windward faces and the gular section ( fy / fj = 4 ), the value of b range from 100 mm to 170 mm ( the optimum value is 120 mm ) and the value of b / h range from 1. 4 to 2. 2 ( the optimum value is 2. 0 )

    對於四設百葉型帽,計算表明: l )正裝傾斜擋板的百葉型帽可認為是排帽,倒裝擋板傾斜的百葉型帽可認為是進帽; 2 )排帽中,擋板正裝30 」 、帽四個的有效fy和管凈fj的比值( fy腸)為4 、擋板寬度b在70inln到120inln之間、板間距比值隴在0 . 5到0 . 6的百葉型帽排效果最好; 3 )進帽中,擋板倒裝裝60 「 、帽四個的有效管凈的比值( fy例)為4 、擋板寬度b在100咖到170mm之間( 120mm為最佳) 、板間距比值隴在1 . 4到2 . 0的進帽( b爪= 2 . 0為最佳)的百葉型帽進效果最好。
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