就设备的结构而言：喷嘴的截面积、螺杆与螺套的螺距、间隙、转速、螺套螺纹的深浅是影响膨化度的主要因素。
While for the equipment structure, they were the sectional area of nozzle, the pitch between screw and its turnbuckle, clearance, rotate speed, and the depth of the whorl on the turnbuckle.
在风洞实验中采用纹影照相和压力分布相结合的实验方法，确定了侧后向喷流复合增程技术中喷嘴—模型之间间隙的大小对表面压力的影响。
The influence of clearance between the nozzles and the model of the surface pressure was used in the hybrid extended-range technique of the side back jet.
可见流体在针阀与喷嘴出口间隙大的时候其内部旋流强度大。
Fluid can produce strongest internal swirl when the needle is far from the nozzle exit.
应用推荐