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- Mini Dewar of IR detector provides cryogenic and vacuum environment for IR photoelement. 红外探测微型杜瓦是一种能满足红外光敏元件在低温及真空环境下有效工作的重要装置。
- In vacuum environment, the performances of the arcjet were tested under several conditions with argon as the propellent. 在真空环境下;用氩作推进剂;得到了不同工况下发动机的性能参数.
- Because of the oilless self-lubrication characteristic in ceramic, the bearing may overcome lubrication problems in an ultra-high vacuum environment. 因陶瓷材料独具的无油自润滑特性，故在超高真空环境中，可克服普通轴承无法实现润滑的难题。
- After the high altitude interceptor released from post-booster vechicle, part of its electrical cable from guidance bay to equipment bay worked in thermal vacuum environment. 摘要高空制导飞行器从母舱释放后，制导舱与仪器舱之间部分电气电缆处于热真空条件下工作。
- Because the space is a vacuum and weightlessness, and the ground can only simulate zero gravity vacuum environment or the environment, but it is difficult both at the same time. 因为太空中既失重又真空，而地面只能模拟真空环境或失重环境，但两项很难同时进行。
- The vacuum pump is used to provide a vacuum environment for the freezing-drying cabinet and the condensers so as to enable the moisture in the materials to sublimate in the vacuum. 真空泵的作用是给冻干箱和冷凝器提供一个真空环境，使物料的水份可以在真空下进行升华。
- Because of outer space in both weightlessness and vacuum, but the ground can only simulate the vacuum environment or the gravity-free environment, but two items very difficult also to carry on. 因为太空中既失重又真空，而地面只能模拟真空环境或失重环境，但两项很难同时进行。
- radiation degradation in vacuum environment 真空辐射衰减
- 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。
- 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。
- He is insensitive to the environment. 他对环境感觉不敏锐。
- She is not used to the new environment. 她对新环境不习惯。
- The symbol for the speed of light in a vacuum. 表示真空中光速的物理符号
- Children need a happy home environment for their healthy growth. 孩子们需要幸福的家庭环境才能健康地成长。
- Children need a happy home environment. 孩子需要一个幸福的家庭环境。
