straight-forward method的用法和样例：
例句
- The reaction characteristics of synthesizing methyl chlorsilane by direct method and the heat transfer of the fluid bed in the reactor were analyzed.
分析了直接法合成甲基氯硅烷的反应特点及反应器内流化床的传热过程。 - At last, the un-direct method that thins the vessel area as the skeleton is adopted on the research of the direct and un-direct methods.
最后进行骨架提取，通过对比研究直接法和间接法，本文采用了间接法，即通过细化血管区域实现心血管骨架提取。
