T he total loss in the compound leaned nozzleblade compared to the original designed straight diffluent blade is decreased by 32.3%?
优化设计弯曲叶片总损失比原设计直叶分流叶栅总损失下降幅度为32.3%。
2
The results show that the reason why surge happened is that flow area of nozzle ring and blade was decreased.
结果表明：增压器喷嘴环和涡轮叶片流通面积减少是涡轮增压器喘振的主要原因。
3
The paper also briefs the nozzle or moving blade surface hardening treatment technology, including plasma spraying and diffusion layer for preventing the nozzle and moving blade from SPE.