妊娠相关蛋白- A是一种高分子量的锌结合金属蛋白酶，是易损斑块新的标志物。
Pregnancy associated plasma protein-A (PAPP-A) is high molecular weight metalloproteinase and a novel marker of vulnerable plaque.
冶金工程师研究和开发新的合金和从矿石中提取金属的系统；
Metallurgical engineers research and develop new alloys and systems for extracting metal from ores;
在极低重力，他们已经扩展我们的知识的影响及对人体的太空飞行，创造新的金属和合金和太阳的现象。
In extremely low gravity, they have extended our knowledge into the effects of space flight on the human body, the creation of new metals and alloys and solar phenomenon.
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