For example, in Figure 3 the solid diamond indicates that the relationship is a composition — in other words, that instances of the address class can only exist within the context of a person class.
比如，图3中的实心菱形表示这里是组合关系——换句话说，address类的实例只能存在于person类的上下文中。
This paper analysed the pattern and composition of residual metal in diamond fracture surface by ways of Scanning Electron Microscope (SEM) and Energy Dispersion Spectrum (EDS).
采用扫描电镜(sem)和能谱(EDS)分析方法，分析了国内六种代表性的金刚石断面上残留触媒的形态及成分。
The composition and microstructure of the diamond saw blade joint welded by laser welding were studied using X ray diffraction and SEM, and the mechanical properties of welded joint were measured.
利用x射线衍射分析和扫描电镜，研究了金刚石锯片激光焊接接头的成分和组织，并测试了接头的力学性能。
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