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- The method of increasing the unmaintained dewar high vacuum lifetime is clarified. 提出了保持杜瓦长期高真空状态的方法。
- Analysis of Dewar Thermal Isolation and High Vacuum Lifetime 微型杜瓦绝热和真空保持的分析
- Some pumps and all vacuum cleaners work by suction. 有些泵和所有真空吸尘器都是借吸力工作的。
- It's a once in a lifetime chance. 这是一生难得的机会。
- She devoted her lifetime to the study of zoology. 她以毕生精力从事动物学研究。
- He met with many a setback in his lifetime. 他一生中遭到过许多挫折。
- His wife's death left him a vacuum in his life. 他妻子的去世使他的生活变得空虚。
- Her husband's death left a vacuum in her life. 她丈夫的死使她的生活变得空虚。
- Some people are living in a vacuum. 有些人过着与世隔绝的生活。
- A vacuum cleaner is a handy household tool. 吸尘器是一种使用方便的家庭用具。
- The shop repairs vacuum cleaners. 这家店修理吸尘器。
- The porter turned off the vacuum. 清洁工关掉真空吸尘器。
- A lifetime guarantee; lifetime membership. 终身保障; 终身会员资格
- The symbol for the speed of light in a vacuum. 表示真空中光速的物理符号
- He is a legend in his lifetime for his scientific discoveries. 他的科学发现使他一生成为传奇人物。
- The eating habits of a lifetime are not easily given up. 一生中长期形成的饮食习惯是不容易改掉的。
- Could you reconcile yourself to a lifetime of unemployment? 你能甘心一辈子失业吗?
- Sealed under low pressure or a partial vacuum. 抽空密封的在低压或部分真空状态下密封起来的
- In his own lifetime Galileo was the centre of the controversy. 伽利略在世之日一直是激烈的论战中心。
- He has gone through many a severe test during his lifetime. 他一生中经受过多次严峻的考验。