The gasket among unions adopts food grade material.

快接件的垫圈全部采用可食用级材料；

youdao

These designs reduce the problems of weapons-grade material being produced and sold illicitly .

这些设计也减少了制造终极武器的材料和非法利用核能的问题。

youdao

There were no mandatory standards adopted for securing nuclear facilities. And no universal commitment to stop churning out more weapons-grade material.

没有保障核设备安全的强制标准，也没有停止生产更多武器级核材料的全面承诺。

youdao

"Last November,Iran announced that it would build In February, Iran said that it would begin to enrich uranium to nearly 20 percent-moving,closer to weapons-grade material."

VOA: standard.2010.06.09

The U.S.government says Tehran is trying to make weapons-grade nuclear material.

VOA: standard.2010.06.29

When enriched to a high degree, uranium can be used for weapons-grade material.

CNN: Defiant North Korea 'to weaponize plutonium'

Then, changes in the mine plan delayed access to higher-grade material, as well as a slower ramp-up of the DOZ mine, Adkerson expained.

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Since 2010, Iran has been enriching uranium to a level of 20%, an important technological step towards being able to produce more highly enriched weapons-grade material.

BBC: Iran nuclear crisis: Jalili says talks 'positive step'