positive draft 中文意思是什麼
positive draft
解釋
工人通風-
Directing against state of affairs at present, such as margin of type - selection parameters being selected comparatively large during design stage of air fans for boilers in thermal power plants, the opening degree of air fans in operation being often smaller ( for adjustment of inlet regulator ) or operation at lower revolution speed ( for speed - regulating operation mode ), and efficiency of air fans being lower etc., factors and corresponding measures having to pay attention in margin selection of air fan ' s parameters have been put forward through analysing practical example of retrofitting forced draft fans in one power plant, playing certain positive role for energy - saving and benefit - increasing in power plants
摘要針對目前火力發電廠鍋爐風機在設計選型時參數裕量選取較大，運行時風門開度較小（對入口調節器調節）或低轉速運行（調速運行方式） ，風機效率較低的狀況，通過對某電廠送風機改造實例的分析，提出了在風機參數選擇中的裕量選取需要注意的因素及相關對策，對電廠的節能增效有一定的積極作用。 -
The draft program which the cultural industry committee has drawn up is quite positive in impact, with a strong emphasis on concrete industry - building measures which take into consideration both cultural and economic factors in comprehensive manner
芬蘭文化產業委員會對實際提案擬出了初步的草案，內容積極且富建設性，同時結合了文化和經濟上的考量。
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