These constraints annotate models with an additional strengthening layer of semantics beyond what is expressible solely in base UML. 這些約束用額外的語義強(qiáng)化層標(biāo)來注模型，超出了只在基礎(chǔ) UML 中可表示的內(nèi)容。
Microstructure of electron beam surface strengthening layer of aluminum alloy is analyzed by using scanning electron microscope, and the compositions are detected by using EDS. 采用掃描電鏡分析鋁合金電子束表面強(qiáng)化層的顯微組織，并進(jìn)行EDS成分測試；
The effects of pulse width, pulse interval, peak current and process time on intensified layer are analyzed. And the micro-hardness and the property of strengthening layer are also analyzed. 分析了脈沖寬度、脈沖間隔、峰值電流、加工時間對強(qiáng)化層厚度的影響，并對強(qiáng)化層的顯微硬度和耐磨性進(jìn)行了分析。