This is the best working Angle to prepare the notch, drill the tibial tunnel, and initiate the femoral guide pin before fully flexing the knee.

这是准备髁间切迹、建立胫骨隧道、在完全屈膝前放置股骨导针的最佳工作角度。

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For validating the aerodynamic characteristics of LP turbine guide vane, the wind blow was carried out for test cascade of the guide vane on the low speed annular wind tunnel.

为了考查低压涡轮导向器的气动性能，在低速环形叶栅风洞上对导向器的实验叶栅进行了吹风实验。

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Using a guide pin, the surgeon carefully drills a tunnel through the tibia and the femur.

使用一个导针，外科医生通过胫骨和股骨小心地钻出一个隧道。

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They take you inside through a tunnel that smells of ozone and let you look through glass windows at giant, whirring generators while the guide unfurls the mysteries of turbines and transformers for the rapt crowd.

NPR: Excerpt: 'Inventing Niagara'