Objective: To prove the effects of antiseptic fixative and preservative fluid from rare earth material.

目的：从稀土材料取得的防腐固定灌注液和保存液。

youdao

This paper discusses the quality control of dike body earth material filling building in river and lakes.

阐述了江、河、湖堤防堤身土料填筑的质量控制。

youdao

S. has lost the necessary rare earth material refining capacity, and rebuilding the supply chain may take up to 15 rs.

此外，美国还失去了必要的稀土材料精炼能力，重建供应链最长可能需要15年的时间。

youdao

Scientists at the Goddard Space Flight Center in Greenbelt,Maryland, found the substance glycine in material brought back to Earth from a comet.

VOA: special.2009.09.30

The story of how space scientists were able to recover the material and bring it back to Earth is just as exciting.

VOA: special.2009.09.30

Stardust then returned to Earth and released a special reentry capsule containing the material it had collected.

VOA: special.2009.09.30

The United States has shuttered the vast majority its rare earth mines and now imports over 90% of the rare earth material needed for both economic purposes as well as weaponry.

CENTERFORSECURITYPOLICY: Center For Security Policy

In 2006, Stardust is scheduled to become the first spacecraft to return to Earth with material from beyond the moon.

CNN: NASA's Stardust mission develops case of blurry vision

After launching the FireFly probes in 2015, the company seeks to launch a larger craft, named DragonFly, in 2016 which will be able to return between 30 to 60 kgs of material to Earth.

FORBES: Asteroid Mining Becoming More Of A Reality