Fearful that India's nuclear Arsenal will overwhelm its own, Pakistan continues to block negotiations on a treaty that would freeze all production of weapons-grade material.

巴基斯坦担心印度的核武库会压过其核武库，所以继续阻挠关于冻结所有武器级材料生产的条约的谈判。

youdao

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

Its main products include cotton yarn, grey cloths and high-grade material for clothing.

企业主导产品：棉纱、坯布和高档成衣面料。

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

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.

FORBES: Freeport Copper, Gold Output Falls In 3Q But Expected To Rise Again As Indonesian Production Picks Up

To imagine that private industry, needing to cut costs to the bone, could do a better job at securing massive quantities of bomb-grade material is a fantasy.

WSJ: What Should the U.S. Do With Nuclear Waste?

The United States and other Western nations have demanded that Iran stopped its uranium-enrichment program, which they perceive as a precursor to production of nuclear warhead-grade material.

NPR: Hagel Says Military View Shaped By Vietnam