die-block

基本解释

Embossing The process of raising a printed image using an un-inked block or die on paper or board.
浮凸压印用不着墨的电版或模在印有印纹的纸品上压成凸纹效果的方法。
The copper-made die block in which a conical welding opening is bored is arranged on the middle part of the upper die.
上模为中部开有锥形焊口的铜制模块，焊口位置与底模熔池对应。
ip.com
Source of aluminum model: self-check die-block equipped by DPX-MD dual-energy X-ray bone densometer produced by American LUNAR Company.
铝体模来源：美国LUNAR公司生产的DPX-MD双能X射线骨密度仪所配备的自检模块。

And what seems to me and other members of the administration to be the principal stumbling block is the commitment, the die-hard commitment on behalf of congressional Republicans, to even consider asking millionaires and billionaires to pay a little bit more to deal with our deficit challenges.
WHITEHOUSE: Press Briefing by Deputy Press Secretary Josh Earnest