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(jìn)中處于夾制情況下的炮孔爆破進(jìn)行分析，提出炮眼分階段設計的原理及有關(guān)的參數。 - The interface contract between the portal and each system is designed and documented during the design phase of your methodology.
門(mén)戶(hù)和每一個(gè)系統之間的接口約定是在方法的設計階段設計和記錄的。
