The effect of preparation temperature and aging time of the precursor on the properties of the resulting MgO was studied.
以不同沉淀剂制备了碱式碳酸镁前驱体，讨论了前驱体制备温度和制备时间对得到的氧化镁的影响。
2
Then later, when enough time has passed, become strong in your resolve to understand that everything you are seeing now is a precursor to a new kind of partnership with the forces of the planet.
然后，当足够的时间过去，在你心中会坚定的明白，你现今所看的一切是一个先驱履行同地球力量的新契约。
3
Characteristics of space time magnitude in precursory field and mechanism of precursor anomaly are analyzed.