Titanium nitride was synthesized by ammonia reduction and nitridation under flowing ammonia atmosphere while the content and tetragonal phase structure of zirconia was unchanged.
采用氨气还原氮化法，在流动的氨气氛下原位反应生成氮化钛，同时保持四方相氧化锆含量和结构不变。
Therefore, the granular model and two-phase flowing theories will be the key problems to be solved for the computer simulation of PIM process.
因此，颗粒模型和两相流理论将是金属粉末注射成形计算机过程模拟的重要研究方向。
Based on the theory of two-phase flow pattern of gas and liquid, gas cut change can be detected with acoustic wave after gas flowing into wellbore.
基于气体侵入井眼后按气液两相流型分布的原理，利用声波可以早期检测到气侵。
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