冷辗工艺广泛应用于环件的加工，在冷辗环数值模拟与优化过程中，圆度是重要的目标设计变量。
Cold rolling technology is applied to ring parts extensively. In the process of numerical simulation and optimization of cold rolling, roundness is a key object variable of the design.
利用瞬态控制及测量系统，对增压中冷柴油机在瞬态工况下的烟度排放特性进行了试验研究。
Smoke emission behaviors of a turbo charged after cooled diesel engine under transient operating conditions were investigated by transient measurement system.
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