air knife

基本解释

The slot 14 may be formed by use of a hot air knife or by a metal blade and defines upper and lower flaps 15,16 which are adhered to the edge 17 of the cloth.
槽14可以通过使用一个热气刀或者一把金属刀片制成并且它限定了附着于该滤布的边缘17上的上和下折板15，16。
Blowing equipment is using the latest air knife drying technology, two rows of high pressure air knife can sweep off the water at the surface of product quickly.
风干机用目前最先进的风刀干燥技术，通过两排高压风刀快速把产品价格表面的水分扫干，可无级调速。
Heavy edge control is a key matter in hot-dip galvanizing pro- cess. Based on the principle of the air knife jetting, the cause for heavy edge and its effect on the process are analysed.
边部锌层厚度控制是热镀锌带钢生产中一个极重要的问题，从气刀喷吹原理入手，分析了边部锌层增厚产生原因及其对生产的影响；

On days like we had in early October, when the air is so thick that you can almost cut it with a knife, you have to wonder whether China is taking the environment seriously.
FORBES: How Green is China?