The paper introduces the preoxidation two periods nitriding technology. The technology makes use of the catalysis of preoxidation enough to shorten nitriding technology time.
采用预氧化两段式气体渗氮工艺，充分利用预氧化的催渗作用，达到缩短渗氮工艺周期的目的。
Studies in AIS the essential technology: Time synchronization, Slot reuse.
研究AIS中的关键技术：时间同步，时隙复用等。
We are innovators in technology, products and services. On the forefront of technology, Time Warner has pioneered industry-shifting products such as the DVD and digital cable.
我们是技术、产品和服务的革新者，始终站在技术的最前沿，时代华纳引领了行业产品变革的潮流，如DVD和数字有线电视。
We are innovators in technology, products and services. On the forefront of technology, Time Warner has pioneered industry-shifting products such as the DVD and digital cable.
我们是技术、产品和服务的革新者，始终站在技术的最前沿，时代华纳引领了行业产品变革的潮流，如DVD和数字有线电视。
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