ⅲ region is tip leakage flow that direction of blade flange clearance turn to suction side; Ⅲ区为叶片轮缘部中间隙泄漏流动的流动方向转向背面;
The removal of ceramic core is very difficult for the extraordinary complex internal passages. Any residual ceramic core will affect the cooling of blade, which will, in turn, affect the life and safety of aircraft engines. 复杂的冷却通道使脱芯十分困难,残留在叶片内部的陶瓷型芯会严重影响叶片的散热进而影响发动机的寿命和安全。
Life, exactly like a blade of green leaf, will be shrivelled up and turn yellow as time wears on, but with its strong veins left to be clearly seen. 生命犹如一片绿叶,随着时间的流逝,慢慢变得枯黄,但它的叶脉还是那么清晰可见。