step by step design的用法和樣例：
例句
- Blact hole cxplesion in a confed condition within tunneling is analysized,a stage-by-stage blast hole design theory and the related paraameters are presentes.
對掘進中處於夾制情況下的炮孔爆破進行分析，提出炮眼分階段設計的原理及有關的參數。 - The interface contract between the portal and each system is designed and documented during the design phase of your methodology.
門戶和每一個系統之間的介面約定是在方法的設計階段設計和記錄的。
