导向器叶片 meaning in English

guide valve
nozzle blade

The two shockwave and the wake generated in vane trail can influence the main flow periodically
导向器叶片尾缘的激波和尾迹都会对下游流场产生周期性的影响。
Road equipment . permanent means of guiding traffic . plastic guide vane devices for signalling for signalling divergent roads : characteristics and specifications
道路设备.指导交通的常用方式.岔路信号用塑料导向器叶片装置:特性和规范
The vortex simulated in this article include the shedding vortex induced by the vane trailing edge boundary layer , the endwall vortex generated by the endwall boundary layer interaction , the passage vortex generated by the rotor rotation , and the leakage vortex generated by the tip clearance flow
涡轮级内的涡运动包括：导向器叶片尾缘附而层引起的脱落涡；转子通道内转子的旋转运动产生的通道涡；根脚区两个端壁附面层干涉，形成的根脚涡；存在叶尖漏流时，出现的漏流涡。