duration of ventilation 中文意思是什麼
duration of ventilation
解釋
通氣時間- duration : n. 1. 持久，持續。2. 持續時間，存在時間；期間。adj. -al
- of : OF ＝Old French 古法語。
- ventilation : n. 1. 通風，換氣（法）；通風裝置。2. 發泄，發表；（問題的）公開討論；訴諸輿論。
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In the egg laying industry, the bodies of laying birds often suffer from deteriorated resistance to disease, short duration of the peak period of egg laying time and low rate of egg production due to the laying houses incomplete disinfection, poor sanitation, low - intensity light and lacking ventilation
在蛋禽飼養中，由於禽舍消毒不徹底，環境衛生較差，光線不足，通風不暢等原因，導致蛋禽機體抗病能力較差，產蛋高峰期持續時間較短，產蛋率降低。
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