production technique of high grade zinc oxide

例句：

1. 1. The company's production technique is world-class.
   该公司的生产技术世界领先。
2. 2.The new machine has greatly improved the production technique of our factory.
   新机器大大提高了我们工厂的生产技术。
3. 3. The engineer explained the production technique in detail.
   工程师详细解释了生产技术。