Excessive energy is also required to achieve appropriate pressures and vacuums.
还需要额外的能量来造成所需的压力和真空.
辞典例句
My personal theory is that needs and desires create mental vacuums.
我个人的理论是,需求和欲望制造了思想真空.
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Both vacuums and pure oxygen conditions are unfavorable for survival.
无论是真空还是纯氧环境,都不利于生存.
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Our product range contains upright vacuums , dry tank vacuums, wet tank vacuums and special products.
我们的产品包含直立真空, 真空干燥罐,真空湿坦克和特殊产品.
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