“penetration”的概念、定义、翻译、参考文献-科学参考

单词	penetration
释义	penetration [´pen·ǝ`trā·shǝn] ^{AEROSPACE ENGINEERING} That phase of the letdown from high altitude to a specified approach altitude. ^METALLURGY 1. The distance from the original surface of the base metal to that point at which weld fusion ends. 2. A surface defect on a casting caused by molten metal filling voids in the sand mold. ^ORDNANCE Distance to which a projectile sinks into a target.
随便看	metacentric height metacercaria metacestode meta character Metachlamydeae metachromasia metachromatic granules metachromatic leukodystrophy metachromatic stain metachromatism metachrosis metacinnabar metacinnabarite metacneme metacompiler metacone metaconid Metacopina metacryst metacrystal metadyne metagalaxy metagenesis metagranulocyte metahalloysite

科学参考收录了103327条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。