The nozzlevane is difficult to be cast due to its large size and complicated shape.
由于该叶片尺寸大、形状复杂，给铸造工艺带来很大难度。
2
The vehicle variable geometry turbocharger (VGT) with pneumatic and symmetric nozzle ring vane was researched.
对应用气动型与对称型喷嘴环叶片的车用可变几何涡轮增压器进行了研究。
3
Based on the consideration of nozzle ring pneumatic torque transmission, the torque of pneumatic force acting upon nozzle guide vane was acquired by calculation.