| 1. | But the same vacuum can be converted into a door
但是，同样的真空能被转换成门。
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| 2. | When a constant heating temperature is maintained , increasing the vacuum can speed up the drying process
当加热温度恒定，提高加热湿度，能加快干燥速率。
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| 3. | The increased speed simplifies the bec apparatus quite dramatically because the vacuum can have 100 times as much residual gas in it
速度的增加可以大为简化bec仪器，因为这时真空里残留的气体量可以多100倍。
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| 4. | 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世纪出现的填补了这项学术空白的两大思想学派可被总结为“繁殖决定型”和“环境决定型” 。
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| 5. | 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
空间充气展开结构的空间实验花费往往极为昂贵,而由于重力和大气压力的影响,充气结构的地面实验又很难模拟实际空间工作环境,微重力和真空环境也很难在较大空间内同时实现。
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