汽轮机叶片制造中，叶片叶型的内弧、背弧形状通常是使用样板来检验的。
Inner arc and carry arc of the blade have been tested by the model in processing steam turbine blade.
与弧背前陆盆地和周缘前陆盆地相并列，并对应于板块构造演化历程中的大洋消减、大陆碰撞和陆内缩短三个不同性质的聚敛阶段。
Therefore they are corresponding to the three different featured convergent stages of ocean subduction, continental collision and intra-continent contraction in the structural evolution of plates.
早白垩世褶皱冲断作用和弧背前陆盆地系 统的发育暗示了拉萨地块发生地壳缩短增厚的时间可能从早白垩世就已经开始。
The presences of Early Cretaceous thrusting and foreland basin system suggest that crustal thickening in the Lhasa terrane likely initiated during the Early Cretaceous.
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