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。

youdao

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。

youdao

Characteristics of space time magnitude in precursory field and mechanism of precursor anomaly are analyzed.

分析了前兆场的时空强特征，前兆异常机理。

youdao

This would be a difficult time consuming, contentious and potentially expensive precursor to the main event, the referendum.

BBC: House of Lords: Localism Bill

This was the precursor of all subsequent annual CSR reporting and the first time a company felt compelled to state, not only their financial performance, but also the non-financial impacts their operations had on the communities and the environment where they operated.

FORBES: Part I in a CSR Series: Corporate Citizenship in a Global Economy

The Brazil World Cup bid team has increased its security budget as the country prepares to host the tournament for the first time since 1950, as well as next year's precursor Confederations Cup and the 2016 Summer Olympics.

CNN: Brazil boosts World Cup security budget as crime rises