空军是国防的重要组成部分。 Air force is an important component of national defense.
联合的与政体各组成部分之间的协定或合约有关的或由其组成的 Relating to or formed by a treaty or compact between constituent political units.
晶体一种由原子、离子或分子作重复和立体型排列而形成的均质固体，在组成部分之间有固定的距离 A homogenous solid formed by a repeating, three-dimensional pattern of atoms, ions, or molecules and having fixed distances between constituent parts.
原子某成分或元素，被视为是某一特定结构中不可分的组成部分 A part or particle considered to be an irreducible constituent of a specified system.
子系统或设备的基本组成部分或功能部件之中的一个。它可以是一种独立的元件，也可以是若干部件、装配件或附件的组合。 One of the essential, functioning parts of a subsystem or equipment, possibly a self-contained element, or a combination of parts, assemblies, attachments, or accessories.
