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- SCD developed the first vacuum etching machine in china,with vacuum flood bar in the etching chamber;no pool effect;etching factor is up to 4.0. 简要说明：SCD开发了中国国内第一台真空蚀刻机，蚀刻室内加装真空水刀，从根本上解决了水池效应，蚀刻因子提高到4。0以上。
- That is a beautiful etching of a bird. 那是一只鸟的漂亮的蚀刻画。
- 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。
- Hanging on the wall was a fine etching of the church. 挂在墙上的是一幅精致的教堂蚀刻板画。
- 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。
- The symbol for the speed of light in a vacuum. 表示真空中光速的物理符号
- vacuum etching 真空腐蚀
- 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
- Look at this glass etching of the Little Mermaid. 看这件刻有小美人鱼的玻璃器皿。
- The artist is etching a picture on a metal plate. 艺术家正在金属板上蚀刻作画。
- Dirt and dust are drawn into a vacuum cleaner by suction. 污物和灰尘被吸入吸尘器。
- It must have taken a lot of time to etch that. 蚀刻这个图案一定花了不少时间。
- We could not pull apart two plates which enclosed a vacuum. 如果两个盘子间是真空，我们就无法将它们分开。
- An etching made by this process. 细点腐蚀制板法的过程
- Operating by means of suction or by maintaining a partial vacuum. 抽真空的用吸取的方式或用维持部分真空的方式来运作的
