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vacuum canning造句

"vacuum canning"是什么意思  
造句與例句手機版
  • But the same vacuum can be converted into a door
    但是,同樣的真空能被轉換成門。
  • When a constant heating temperature is maintained , increasing the vacuum can speed up the drying process
    當加熱溫度恒定,提高加熱濕度,能加快干燥速率。
  • The increased speed simplifies the bec apparatus quite dramatically because the vacuum can have 100 times as much residual gas in it
    速度的增加可以大為簡化bec儀器,因為這時真空里殘留的氣體量可以多100倍。
  • The two main schools of thought about speciation that emerged in the 20th century to fill this intellectual vacuum can be summed up as “ breeding defined ” and “ niche defined ”
    20世紀出現的填補了這項學術空白的兩大思想學派可被總結為“繁殖決定型”和“環境決定型” 。
  • The ground tests of inflatable structures can hardly reflect real work environment in space because of the effect of gravity and atmospheric pressure . and tiny gravity and vacuum can hardly be satisfied at the same time . moreover , the cost of space testing is prohibitive expensive
    空間充氣展開結構的空間實驗花費往往極為昂貴,而由于重力和大氣壓力的影響,充氣結構的地面實驗又很難模擬實際空間工作環境,微重力和真空環境也很難在較大空間內同時實現。
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