grand white fir,white fir (Abies grandis Lindl.)是什么意思

用法例句

Effects of Aging on Mechanical Properties of 2024 Aluminum Alloy by Severe Cold Plastic Deformation;

时效制度对大冷变形2024铝合金力学性能的影响

The effects of severe cold plastic deformation of three testing process on the microstructure and elongation of the 2024 aluminum alloy were investigated by means of mechanical tensile test,SEM and TEM observations.

通过力学性能检测、扫描电镜和透射电镜观察,研究了3种工艺下大冷变形对2024铝合金组织和性能的影响。

Experimental study on 6 W class high capacity Stirling cryocooler;

6W大冷量斯特林制冷机的实验研究