三段式工艺,Three-phase-drying
three-stage-curing for flue-cured tobacco三段式烘烤工艺
3)three-stage cleaning process三段净化工艺
4)3 Stages Fermenting New Technology三段发酵新工艺
5)three-stage process三阶段制管工艺
6)three stages tension technology三阶段张拉工艺
1.According to the construction practice of the double track monolithic box girder of the passenger dedicated line,the author analyzes the causes of the non-loading crack,and provides preventive measures,and the application of the three stages tension technology,effectively prevents the beam concrete from early crack.通过对客运专线双线整孔箱梁预制的施工实践,分析了造成非荷载裂缝的成因,并提出了预防措施,指出三阶段张拉工艺的应用,有效地防止了梁体混凝土出现早期裂纹。
延伸阅读

三段1.犹言三节，三块。 2.指三段论式。